American women's tennis star Lindsay Davenport has had arthroscopic surgery on her right knee and is expected to be sidelined for at least four months.
Doctor Richard Steadman says the 25-year-old Davenport will likely make a full recover, but not without four or six months of rehabilitation.
Davenport had the operation four days after withdrawing from the Australian Open because of persistent pain in her knee.
Davenport was injured at the season-ending Sanex Championships in Munich, Germany, on November third. She pulled out of the championship match there, ending a 15-match winning streak in which she won three straight tournaments.