Justine Henin, who rocked tennis by her shock decision to quit on the eve of the French Open, admitted on Wednesday that failure to win Wimbledon was her biggest regret.

The Belgian was runner-up at the All England Club in 2001 and 2006 losing to Venus Williams and Amelie Mauresmo respectively, leaving a major gap in her portfolio which boasted four Roland Garros titles, two US Opens and one win at the Australian Open.

"Not winning Wimbledon has been the big disappointment of my career. It’s a great tradition. I love it but my game wasn’t quite good enough and I probably wasn’t confident enough to win on the grass," said Henin.

"I keep thinking that Venus Williams is the best player on grass. She’s big and tall so, for me, she’s the favourite this year."

Henin quit just before her 26th birthday, but hasn't ruled out a return to the tour although she admitted a change of mind was unlikely.

"I would never say for sure that I won't be back but for me and the people who know me they know that I do something 200 percent and when I decide it's over, it's over," said Justine Henin, speaking on the Laureus website.

"Lots of people understood the decision. They are sad for me and for the game of tennis but maybe I can give something else now and that's really important too."

AFP