(AP Photo/Andy Brownbill)
MARSEILLE, France (AP) Second-seeded Stan Wawrinka hobbled out of the Open 13 second round with a recurrence of his left knee problem, retiring when trailing 6-4, 1-1 against Ilya Ivashka on Thursday.
After abandoning against the 193rd-ranked Belarusian, the three-time Grand Slam champion - who looked upset when leaving the court - said he struggled with his troublesome left knee from 3-3 in the first set onward.
"At 3-3 I hit a forehand volley and it hurt the knee a bit. I felt that it was very tense," he told the tournament organizer's website. "After that I simply couldn't flex it."