INDIANAPOLIS — Rookie Colts cornerback Kevin Thomas has a knee injury that will require surgery and could force him to miss the 2010 season.

The team said Friday that Thomas hurt the knee during Sunday's rookie mini-camp, which was closed to the media.

Indianapolis drafted Thomas in the third round, No. 94 overall. The Southern Cal alum was expected to help fill the void left by Marlin Jackson, who signed with Philadelphia as an unrestricted free agent in March.

The Colts did not provide details of the injury, and a message was left with Thomas' agent by The Associated Press.

Thomas started 17 games for the Trojans and was a second-team all-Pac 10 choice last season.