Former British tennis star Greg Rusedski has insisted that Novak Djokovic needs to beat Roger Federer in the Wimbledon final tomorrow.

The world number one has won eight Grand Slam titles and is the defending champion, but Rusedski is adamant that he still has a point to prove.

He wrote in The Telegraph: "At his best, Djokovic is by far the number one player on the planet. The question mark for him has always been proving that in finals. The statistic I keep coming back to is that he has lost six of his last nine Grand Slam finals. Harsh as it sounds, but that needs to improve.

"If you look at the French Open final against Stan Wawrinka in the first set he was flying and then in the second set his forehand got a little bit shorter as he got more nervous.

"The pace of his ball when he gets tight grows shorter and does not have as much penetration. When he is relaxed and loose, he is second to none with his connection. After that defeat, this is a really important final for Djokovic to prove his class."

Djokovic and Federer have met in two previous Grand Slam finals, and have won one each.