Otamendi nets derby winner as Man City extend lead at top of Premier League
Manchester City took a giant stride towards regaining the Premier League title as Nicolas Otamendi's second-half winner gave them a 2-1 derby victory over Manchester United at Old Trafford.
Otamendi volleyed home nine minutes after the break to take leaders City 11 points clear of their rivals after Marcus Rashford had cancelled out David Silva's opener for City.
Silva fired home from a corner that had deflected off the hapless Romelu Lukaku to fire the visitors in front two minutes before half-time.
But Jose Mourinho's men still managed to reach the interval on level terms after Rashford capitalised on a mistake by Fabian Delph two minutes into added time at the end of the first half.
Otamendi lashed home the winner in the 54th minute after Lukaku's attempted clearance deflected off a group of players and fell into the City man's path.
Meanwhile, Wayne Rooney scored his first goal in a Merseyside derby as Everton hit back to claim a point against Liverpool in a 1-1 draw at Anfield.
Rooney slammed home a 77th-minute penalty to cancel out a brilliant first-half strike from Mohamed Salah and vindicate new boss Sam Allardyce's cautious tactical approach.
The Toffees seldom threatened their opponents up front and looked tight at the back despite Salah's stunning opener when he looped a left-footed shot over goalkeeper Jordan Pickford.
Liverpool had dominated the opening period and boss Jurgen Klopp will feel aggrieved that his side failed to build on Salah's strike and put the game out of sight.
And he had more cause for irritation 13 minutes from time when Dejan Lovren needlessly fouled Dominic Calvert-Lewin in the box, allowing Rooney to make his piece of personal history.
Elsewhere, Olivier Giroud equalised two minutes from time to snatch a 1-1 draw for Arsenal at Southampton.
Arsene Wenger's men looked set to be heading for defeat when Charlie Austin lashed the opener past Gunners keeper Petr Cech with just two minutes on the clock.
Austin also hit the post within the first 10 minutes but Southampton stopper Fraser Forster had to be alert to tip away a fine effort from Aaron Ramsey.
Just when it looked like the Gunners would end up with nothing, Giroud rose in the box to guide home a header from an Alexis Sanchez cross.