Indianapolis Colts running back Marlon Mack underwent surgery on his fractured hand, coach Frank Reich said Monday.
Reich did not have a timetable for when his star running back might return.
The injury, a fracture of the metacarpal bone in Mack's right hand, is not thought to be season-ending at this time, sources tell ESPN's Adam Schefter.
The Colts play their AFC South rival Houston Texans on Thursday night with the teams tied atop the division with 6-4 records.
Mack, who leads the Colts with 862 yards rushing and seven rushing touchdowns, suffered the injury in the third quarter of Sunday's 33-13 victory over the Jacksonville Jaguars.