Rio Olympics: I had to fight to secure victory, says Andy Murray
Andy Murray survived a major scare against Italy's Fabio Fognini to reach the quarter-finals in Rio.
The 2012 champion had cruised through his opening two matches and another easy win looked on the cards when he led by a set and a break.
But the momentum turned abruptly and Fognini, the world number 40, won eight games in a row to lead 3-0 in the decider before Murray, as he so often does, fought back from the brink to claim a 6-1 2-6 6-3 victory.
Murray said: "It was really, really hard out there and difficult to appreciate unless you're actually out there playing.
"The shadow on the court was making it very hard to pick up the ball and the wind was swirling everywhere so just really tough, tricky conditions for us to play well in.
"I just tried to keep fighting and thankfully he made a few mistakes and I managed to get the win."
Johanna Konta's Olympic singles dream died after she lost in the quarter-finals to Angelique Kerber.
The British No 1 went down 6-1 6-2 to the German after some uncharacteristic unforced errors.
The Australian Open champion will now face the USA's Madison Keys, a 6-3 6-1 winner over Russia's Daria Kasatkina, in the last four.
Konta's hopes of a medal now rest with the mixed doubles where she joins Jamie Murray in a match against America's Jack Sock and Bethanie Mattek-Sands in the first round.