Roger Federer. [Source: BBC Sports]

Greatest player of all time, Roger Federer will retire from top-level tennis after the Laver Cup in London this month.

The 20-time Grand Slam champion has not played since Wimbledon 2021, after which he had a third knee operation.

Federer has struggled with a knee problem for the past three years that has restricted him to only three of the 11 Grand Slams staged since the start of 2020.

He has not played a competitive match since losing to Hubert Hurkacz in the quarter-finals at Wimbledon last summer.

He subsequently announced he needed more surgery on his knee having previously had two operations in 2020.

[Source: BBC Sports]