Indianapolis Colts running back Marlon Mack (25) runs against the Houston Texans during the second half of an NFL wild card playoff football game, Saturday, Jan. 5, 2019, in Houston. (AP Photo/Eri …

Indianapolis Colts running back Marlon Mack (25) runs against the Houston Texans during the second half of an NFL wild card playoff football game, Saturday, Jan. 5, 2019, in Houston. (AP Photo/Eric Christian Smith)