Michigan State freshman guard Gary Harris has a sprained left shoulder and will be out two to three weeks.
Harris was injured when the 15th-ranked Spartans beat Boise State 74-70 on Tuesday night. He was hurt early in the game and didn't return.
He is averaging 12 points a game, third on the team. Coach Tom Izzo says Harris was playing well and it's a shame that he will be out because of a freak injury on a routine sideline exchange.
The Spartans host Oakland University on Friday night.