LONDON—Sprawling on the grass on Centre Court was a new experience for Roger Federer, who slipped and fell in the fifth set of his defeat to Milos Raonic in the semifinals of Wimbledon.
Federer, who had knee surgery to repair a torn meniscus this season, called the trainer to examine that knee, but then resumed play. After the match, he could not say definitively if he had sustained another injury.
"I don't know yet,” he told reporters. “I don't even want to know. I just felt not the same afterwards."
He also did not know exactly what caused him to fall, but emphasized that it was an unusual event.
"I don't know, at this point,” the 17-time Grand Slam champion said. “I hope it's not so bad. I walked it off. I was able to finish. But I don't slip a lot. I don't ever fall down. It was a different fall for me than I've ever had."
Federer has had an unusual amount of injury interruptions this season, with a back injury affecting him during the clay-court season after he had already undergone knee surgery.
It will take a little while to determine the effects of the fall, he noted.
“Just, I hope I didn't hurt myself,” he said. “Then, is it a three‑day thing, is it a 24‑hour thing or is it more? … With the body that's been, you know, playing up this year, I just hope I'm going to be fine. I believe I am, but I'll know more tomorrow when I wake up."
Federer is No. 3 in the rankings.