Roger Federer says that over the last year he "stopped believing" he could play against the best tennis players in the world once again.
The 20-time Grand Slam Champion last won a major competition at the Australian Open in 2018. The last three years for the Swiss star have been plagued by knee injuries resulting in having surgery three times.
Federer won four matches on his way to the Wimbledon quarter-final last year, including beating Brit Cameron Norrie. However, his last eight defeat to Hubert Hurkacz 3-6, 6-7, 0-6 will go down as his last ever major tournament match. It was then that Federer knew his career was on "thin ice".