Roger Federer has revealed that he has been suffering with a hand injury since the summer, but said the problem is no longer a worry as he heads into his home Swiss Open starting on Monday.
The 20-time Grand Slam winner told Germany's Sonntag Zeitung of the problem which began when he trained for the grasscourt season.
"I hurt my hand training at the start of the grass season," Federer told the newspaper.
"It's had more consequences than I thought. I dragged this pain for about three months.
"It's not an excuse and we're not going to make a fuss over it." He added:
"(Sometimes) I felt pain during the first ten minutes of a match warmup. But now I can let go of my forehand normally without thinking of it."