Mavs' Thomas has knee surgery; timetable unclear

The Dallas Mavericks say forward Tim Thomas has had arthroscopic surgery on his right knee. The procedure was done Tuesday by the team's orthopedic surgeon, but a timetable has not been set for his return. Thomas was hurt while working out at his home in California. Thomas, a 12-year veteran, signed with Dallas during the summer. He spent time with the Los Angeles Clippers, New York Knicks and Chicago Bulls last season.