Ten-man Manchester United left Old Trafford seething with injustice as they crashed out of the Champions League in controversial fashion.
A night that began with the shock of Wayne Rooney's omission, ended in bitter frustration and recrimination as Luka Modric and Cristiano Ronaldo sent Real Madrid into the last eight.
MANCHESTER, ENGLAND - MARCH 05: Luka Modric of Real Madrid celebrates scoring his team's first goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Wayne Rooney of Manchester United looks dejected during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Portuguese midfielder Nani celebrates after Real Madrid's Spanish defender Sergio Ramos (unseen) scored an own goal during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Ryan Giggs of Manchester United protests to Referee Bahattin Duran after he sent off Nani of Manchester United during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Ryan Giggs of Manchester United protests to Referee Bahattin Duran after he sent off Nani of Manchester United during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Cristiano Ronaldo of Real Madrid (R) scores his team's second goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Portuguese midfielder Nani celebrates after Real Madrid's Spanish defender Sergio Ramos (unseen) scored an own goal during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Cristiano Ronaldo of Real Madrid (R) reacts after scoring his team's second goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Manchester United Manager Sir Alex Ferguson reacts after Nani of Manchester United is sent off during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's Portuguese manager Jose Mourinho (2R) helps Real Madrid's Argentinian midfielder Angel di Maria to his feet after an injury Real Madrid's Portuguese manager Jose Mourinho leaves the field at half time during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Manchester United Manager Sir Alex Ferguson reacts during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's Portuguese manager Jose Mourinho leaves the field at half time during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Manchester United Manager Sir Alex Ferguson encourages the crowd to show their support during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Robin van Persie of Manchester United looks on during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's Portuguese manager Jose Mourinho leaves the field at half time during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Luka Modric of Real Madrid scores his team's first goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Portuguese midfielder Nani celebrates after Real Madrid's Spanish defender Sergio Ramos (unseen) scored an own goal during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Manchester United's Portuguese midfielder Nani celebrates after Real Madrid's Spanish defender Sergio Ramos (unseen) scored an own goal during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Cristiano Ronaldo of Real Madrid reacts after scoring his team's second goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Cristiano Ronaldo of Real Madrid reacts after scoring his team's second goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Welsh midfielder Ryan Giggs sits on the ground after being tackled during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Manchester United Manager Sir Alex Ferguson reacts after Nani of Manchester United is sent off during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Luka Modric of Real Madrid celebrates scoring his team's first goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Manchester United Manager Sir Alex Ferguson reacts after Nani of Manchester United is sent off during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's Argentinian midfielder Angel di Maria (L) challenges Manchester United's Welsh midfielder Ryan Giggs (R) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Manchester United's Portuguese midfielder Nani celebrates after Real Madrid's Spanish defender Sergio Ramos (unseen) scored an own goal during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Manchester United Manager Sir Alex Ferguson reacts after Nani of Manchester United is sent off during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Sergio Ramos of Real Madrid scores an own goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Real Madrid Manager Jose Mourinho pats Nani of Manchester United on the back after he is sent off during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Nani of Manchester United celebrates after Sergio Ramos of Real Madrid scored an own goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Sergio Ramos of Real Madrid scores an own goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Nani of Manchester United celebrates after Sergio Ramos of Real Madrid scored an own goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Brazilian defender Rafael (R) competes with Real Madrid's Portuguese forward Cristiano Ronaldo (L) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Nani of Manchester United celebrates after Sergio Ramos of Real Madrid scored an own goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Brazilian defender Rafael (R) competes with Real Madrid's Portuguese forward Cristiano Ronaldo (L) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Manchester United's Brazilian defender Rafael (L) competes with Real Madrid's Argentinian midfielder Angel di Maria (R) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Nani of Manchester United celebrates after Sergio Ramos of Real Madrid scored an own goal during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Robin van Persie of Manchester United competes with Sami Khedira of Real Madrid during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's Spanish defender Sergio Ramos (R) closes in on Manchester United's Brazilian defender Rafael (L) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Manchester United's Brazilian defender Rafael appeals to the referee during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Manchester United's Serbian defender Nemanja Vidic (floor) lies injured after colliding with Real Madrid goalkeeper Diego Lopez as Real Madrid's Portuguese forward Cristiano Ronaldo (L) and Manchester United's English striker Danny Welbeck (C) look on during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Real Madrid Manager Jose Mourinho shouts instructions during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Serbian defender Nemanja Vidic (L) jumps for the ball as Real Madrid's goalkeeper Diego Lopez (R) comes to punch during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Manchester United Manager Sir Alex Ferguson walks off at half-time during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Cristiano Ronaldo of Real Madrid in action during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Ryan Giggs of Manchester United looks on during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's Portuguese forward Cristiano Ronaldo (R) is challenegd by Manchester United's Welsh midfielder Ryan Giggs (L) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Manchester United's Serbian defender Nemanja Vidic (L) jumps for the ball with Real Madrid's French defender Raphael Varane (C) and Real Madrid's goalkeeper Diego Lopez (R) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Manchester United's Serbian defender Nemanja Vidic (L) jumps for the ball with Reak Madrid goalkeeper Diego Lopez during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Real Madrid's Portuguese forward Cristiano Ronaldo (C) shoots at goal during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Real Madrid's Portuguese forward Cristiano Ronaldo runs with the ball during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Angel Di Maria of Real Madrid goes off with an injury during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Angel Di Maria of Real Madrid goes off with an injury during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's French defender Raphael Varane (R) and Manchester United's English striker Danny Welbeck (L) compete during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Real Madrid's Portuguese forward Cristiano Ronaldo (L) and Manchester United's Brazilian defender Rafael (R) jump for the ball during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Diego Lopez of Real Madrid punches clear under pressure from Nemanja Vidic of Manchester United during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's Portuguese manager Jose Mourinho reacts during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Real Madrid Manager Jose Mourinho shouts instructions during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Dutch striker Robin van Persie miss-kicks the ball during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Manchester United's Welsh midfielder Ryan Giggs runs with the ball during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Real Madrid's Portuguese forward Cristiano Ronaldo pauses during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Real Madrid's Spanish midfielder Xabi Alonso (R) and Manchester United's Welsh midfielder Ryan Giggs (L) compete during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Cristiano Ronaldo of Real Madrid looks on during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Cristiano Ronaldo of Real Madrid looks on during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Real Madrid Manager Jose Mourinho shouts instructions during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Ryan Giggs of Manchester United challenges Cristiano Ronaldo of Real Madrid during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's Argentinian midfielder Angel di Maria controls the ball during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Real Madrid's German midfielder Mesut Ozil (C) competes with Manchester United's English midfielder Tom Cleverley (R) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Real Madrid's German midfielder Mesut Ozil (C) competes with Manchester United's English midfielder Tom Cleverley (R) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
Real Madrid's Portuguese manager Jose Mourinho shouts to his players during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Ryan Giggs of Manchester United challenges Cristiano Ronaldo of Real Madrid during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Real Madrid's German midfielder Mesut Ozil (R) competes with Manchester United's English midfielder Tom Cleverley (L) during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Mesut Ozil of Real Madrid competes with Tom Cleverley of Manchester United during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Mesut Ozil of Real Madrid competes with Tom Cleverley of Manchester United during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: Tom Cleverley of Manchester United is challenged by Cristiano Ronaldo of Real Madrid during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
Manchester United's Scottish manager Alex Ferguson arrives for the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England, on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: Danny Welbeck of Manchester United is challenged by Raphael Varane of Real Madrid during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: A young Manchester United fan shows off a banner during the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
A Manchester United supporter holds a banner that reads 'Welcome home Ronaldo!' during the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, northwest England, on March 5, 2013.
MANCHESTER, ENGLAND - MARCH 05: The Real Madrid players line up for a team photo prior to the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: The Manchester United players line up for a team photo prior to the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
MANCHESTER, ENGLAND - MARCH 05: A Manchester United fan displays a banner prior to the UEFA Champions League Round of 16 Second leg match between Manchester United and Real Madrid at Old Trafford on March 5, 2013 in Manchester, United Kingdom.
A stallholder sells scarves ahead of the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, north west England, on March 5, 2013.
Stallholders sell scarves and souvenirs ahead of the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, north west England, on March 5, 2013.
A stallholder sells scarves and souvenirs ahead of the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, north west England, on March 5, 2013.
A picture shows scarves and souvenirs on display at a stall ahead of the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, north west England, on March 5, 2013.
Real Madrid supporters pose holding a scarf ahead of the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, north west England, on March 5, 2013.
Real Madrid supporters pose with a stallholder ahead of the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, north west England, on March 5, 2013.
A Real Madrid supporter poses holding a scarf ahead of the UEFA Champions League round of 16 second leg football match between Manchester United and Real Madrid at Old Trafford in Manchester, north west England, on March 5, 2013.
It was the controversial dismissal of Nani for a second-half foul on Alvaro Arbeloa that was the talking point.
At the time, United were leading through Sergio Ramos' own-goal and 2-1 up in the tie.
The pivotal decision of Turkish referee Cuneyt Cakir turned all those hopes to dust, left Rio Ferdinand applauding sarcastically after it was all over and Jose Mourinho celebrating, the former Chelsea boss offering a fuming Sir Alex Ferguson a consoling pat before heading down the tunnel before the final whistle.
The bombshell of Rooney's omission and an ovation for Ronaldo as loud and as long as any home player has received this season set the scene for a match Mourinho said yesterday the "whole world would be watching".
Those who did would have been enthralled by a frenetic contest, largely played in midfield, which justified Ferguson's shock selection.
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At 39, Giggs was not the obvious choice to shackle Ronaldo.
But the Welshman did a magnificent job.
And he was not restricted to defensive duties either. Though opportunities for both sides were limited, Giggs did find time to get forward, delivering one brilliant cross for Robin van Persie, whose acrobatic attempt to finish was blocked by Sergio Ramos.
If Giggs excelled, Danny Welbeck was the biggest threat, just as he had been in the first-leg.
His running from deep positions caused Real a problem, especially out wide.
It was Welbeck who provided that crossing opportunity for Giggs, having earlier presented Nani with a similar chance, which Fabio Coentrao flicked away before the veteran Welshman could pounce.
The one flaw in Welbeck's game is a lack of goals.
His effort in Spain was one of only two this season, and twice he wasted openings to break the deadlock.
The first came after Nemanja Vidic soared to meet Van Persie's corner, only for his thundering header to cannon back off a post, straight to Welbeck, who prodded the rebound straight at Diego Lopez.
Welbeck's second chance was also on the rebound, after Lopez had parried an instinctive effort from Van Persie.
The England man should have made Lopez work. Instead he drove his shot into the ground, which allowed the visitors' keeper to save.
Real had even fewer sights of United's net.
Gonzalo Higuain sent a decent chance wide in the opening stages but other than that, there was always a home defender in the way.
Ronaldo, after his heart-touching reaction to the reception he received, was extremely subdued, failing to make any impression with a free-kick perfectly located for one of those jaw-dropping efforts he seems to have made an art form.
The loss of Angel Di Maria just before the interval forced Mourinho into a tactical reshuffle which Real were still adjusting to when United struck.
Rafael's surge to the edge of the box had Real floundering and although Van Persie's shot was deflected away from goal, Nani had the awareness and strength to shrug Raphael Varane off it.
Welbeck got the faintest of touches to the Portugal winger's cross but it was enough to ensure Ramos' was firm enough to send it rolling into the net.
It all looked to be going to so well.
And then the roof caved in.
When Nani challenged Arbeloa for a bouncing ball inside his own half, he seemed committed and nothing more.
Cakir deemed it dangerous and after waiting until the winger recovered from a non-existent injury, out came the red card.
Nani was incredulous. Ferguson went ballistic.
And with good reason. Repelling Real with 11 men had been tough, with 10 it was bordering on the impossible.
Though they hung on grimly, with Rafael seeming to keep a goalbound Higuain header out with his arm, it took the visitors just 11 minutes to turn the entire tie on its head.
Modric struck first, with a viciously curling effort from 25 yards.
Three minutes later Mesut Ozil found Higuain, whose cross was turned home at the far post by the man United must have known would score.
At times like those, the £80million pocketed for Ronaldo is scant consolation, particularly as his enduring affection was seen in a refusal to celebrate.
The hopeless search for goals forced the 10-men down to the other end.
Rooney, by now a potential saviour, had a chance which he lifted over the bar from six yards.
With that shot sailed United's European hopes and, who knows, possibly Rooney's Red Devils career.





