Indianapolis Colts running back Marlon Mack (25) is hit by Houston Texans defensive end J.J. Watt (99) on a run during the first half of an NFL wild card playoff football game, Saturday, Jan. 5, 2 …

Indianapolis Colts running back Marlon Mack (25) is hit by Houston Texans defensive end J.J. Watt (99) on a run during the first half of an NFL wild card playoff football game, Saturday, Jan. 5, 2019, in Houston. (AP Photo/Michael Wyke)