Former world number two Alex Corretja believes Roger Federer will not retire yet despite his latest injury blow.
Federer spent 14 months out following two operations on his knee before returning to action earlier this year.
That comeback did not go anywhere near as well as planned, though.
After losing in the last eight of Wimbledon, Federer announced his season was over as he required more knee surgery.
At 40-years-old now, that surely has to put a big question mark above the Swiss ace's career. However, Corretja does not believe we have seen the last of Federer on court.
“I think he wants to make the most of his remaining tennis," Corretja told Marca.
"He doesn’t want to retire through the back door, he wants to do it by playing. [He is] too good to retire through the back door.
“If [his knee] is operated on, it is because it looks competitive. At Wimbledon, at 50 percent, he reaches the quarter-finals.
"You may think that if you are okay, you still have a chance of winning there. His intensity and ball speed is still higher than the others."
Although still currently tied with Rafael Nadal and Novak Djokovic for the most career majors in history, Federer has not won a Grand Slam tournament for three-and-a-half years now.
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