Andy Murray has admitted that he was advised to drop out of his French Open second-round match with a back injury midway through his clash with Jarkko Nieminen.

The British number one managed to make a massive turnaround after losing the first set in Paris by clinching a 1-6 6-4 6-1 6-2 victory over Nieminen this afternoon.

"It was tough," said Murray. "I was obviously struggling at lot particularly at the beginning of the match. He helped out a little bit and got nervous at the end of the second set. I don't know how I won to be honest.

"I think my back went into spasm, it was sore this morning when I got up and practised and it was sore 20 minutes after I finished practice. The guys were telling me to stop after the first set, we talked about it briefly before the match and I just decided to play.

"Sometimes guys can get nervous and you feel better, and a combination helped me get through. It's not easy playing against someone that's struggling and sometimes guys stop or try finishing the match. I managed to turn it around and it was tough for him."

The Scotsman will face Santiago Giraldo in the next round.