Gael Monfils ruled out of action until New Year . but we decided there was no point in playing the rest of the year . Frenchman 's ranking has dropped from 49 to 47 . Knee problem prevented him playing at full power . Tommy Haas achieved 500th career win at US Open .
Gael Monfils ruled out of action until New Year . Frenchman 's ranking has dropped from 49 to 47 . Knee problem prevented him playing at full power . Tommy Haas achieved 500th career win at US Open .