Houston Rockets forward Jordan Hill injured his right knee in practice Saturday and is expected to miss at least two weeks.
Detroit Pistons forward Walter Herrmann was released from a Boston hospital Friday after suffering a mild concussion in a game against the Boston Celtics.
Richard Hamilton scored 24 points and Rasheed Wallace added 17 points and 11 rebounds to send the Detroit Pistons past the Washington Wizards 117-109 Saturday night.
The Detroit Pistons re-signed forward Walter Herrmann on Monday.
Chauncey Billups won the league's citizenship award on Monday.