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 .
Gael Monfils ruled out of action until New Year . Frenchman 's ranking has dropped from seven to 47 . Knee problem prevented him playing at full power . Tommy Haas records 500th career victory at Austrian Open .