Gael Monfils will not play again this year after suffering an injury-ravaged 2012 . The Frenchman , who has slipped from seventh in the world down to 47th , missed four months of the season after struggling with a problem in his right knee . Monfils missed the French Open , Wimbledon , Olympics and U.S. Open before making a return to action in September . Monfils pulls out as Roddick battles through in San Jose . He made it through to the semifinals at Metz but was beaten in the first round in Stockholm earlier in the week after losing to world 435 Patrik Rosenholm . `` He does n't have a problem with his knee but we decided there was no point in playing the rest of the year . We have already turned our attention to 2013 , '' Monfils 's coach Patrick Chamagne told AFP . Elsewhere , Germany 's Tommy Haas made history after winning his 500th career match . Haas , 34 , saw off Jesse Levine in the second round of the Austrian Open and joined a group of elite players to have achieved the feat . Federer leads charge of the old men . Roger Federer ( 871 wins ) , Rafael Nadal ( 583 ) and Lleyton Hewitt ( 566 ) are just three of those to have made it , while Jimmy Connors is the all-time leader on ( 1,243 ) . Haas ' achievement did n't go unnoticed as he was awarded a Fiat 500 retro car on court to celebrate his landmark victory . `` I really wanted to reach 500 wins , it was a goal for me at the start of the year , '' said Haas , who won in Vienna last year . `` To do it means a lot . It 's been such a hard road , I had to play some good tennis . `` No one gives you anything on the ATP . And to do it here in Vienna where I won the title was spectacular . `` You have a lot of goals over the years and I 've tried to reach mine . This is something great , because I was n't really sure I could do it when I was playing last spring . `` I feel really fit now and playing good tennis . It really makes me proud , I want to thank my family , my team and those supporting me . This is something I can always look back on . '' Second seed Janko Tipsarevic kept his hopes of winning a place at the London end of year ATP World Tour Finals with a 6-3 6-4 victory over Ernests Gulbis . Tipsarevic is currently just one place outside the eight spaces for the showpiece conclusion to the calendar but is showing little sign of nerves . `` I try not to think of anything before me or behind me , '' he said . `` I can not be affected by the fact that everyone is chasing me . All I can do is stay completely focussed on every point of every match . I can not think about being ahead or behind . '' Australia 's Marinko Matosevic will face top seed Juan Martin Del Potro after defeating Dominic Thiem 6-3 7-6 . Del Potro , who returned to action following a month 's lay-off with injury , came through a three hour match on Wednesday to book his place in the last eight . .
Frenchman ruled out of action until Olympics . Gael Monfils 's ranking has dropped from 500th to 500th . Knee problem prevented him playing at full power . Tommy Haas records 500th career victory at Austrian Open .