The Philadelphia 76ers signed forward Michael Ruffin on Friday and placed Alvin Jones on the injured list with a sprained ankle.

Ruffin, 6-foot-8, played 116 games for Chicago during the last two seasons, averaging 2.4 points, 4.4 rebounds and 16.0 minutes per game.

In four years at the University of Tulsa, he averaged 9.4 points and 9.5 rebounds and shot 52.9 percent. Chicago drafted him in the second round of the 1999 draft.

Jones, a second-round draft pick this year, went on the injured list Oct. 29 because of tendinitis in his right knee. He was activated Nov. 9 and played nine minutes in five games.