World No. 4 Andy Murray dug deep and bounced back from a set and 5-1 down in his quarter-final match at 2012 US Open Tennis Championships to beat Croatian Marin Cilic with 3-6, 7-6(4), 6-2, 6-0 scoreline on Wednesday.

Murray's match was moved from Arthur Ashe Stadium to Louis Armstrong due to rain delays and he clearly looked uncomfortable with that decision.

“I have always found that court tricky to play on. I have had a lot of tough matches on it. It took me a while to get used to it. I think when the conditions slowed down a bit and started to get a bit darker, that helped me.”

Cilic broke Murray early on in the second game of the first set and then secured another break at 5-3 in the set. The Croat successfully served out for a first set lead in the next game.

In the second set as well, Cilic broke Murray twice to race to 5-2 lead but Murray never looked panicked in the middle and started applying himself with more tenacity. The Briton reeled off five straight games in row to take 6-5 lead before Cilic finally held serve to force the tiebreak. Murray turned the tide in his favour in the tie breaker and closed it 7-6(4).

"He got nervous towards the end of that set once I got one of the breaks back, which helped me," said Murray "I started serving better and then gained confidence in my shots from the baseline, because the first set, set-and-a-half I was leaving the ball short and wasn't timing it well."

Murray stepped on the accelerator afterwards and lost only two games in two sets to register the victory in four sets.

"I was fighting to stay in there -- it was not easy," Cilic rued later. "I had to work too much with my service games... it allowed him to take more chances and get more opportunities, putting pressure on me.

Murray will now play Czech Tomas Berdych for a place in the final, who posted a upset win over World No 1 Roger Federer with 7-6, 6-4, 3-6, 6-3 scoreline.