Mack is competing with Rex Burkhead, Dameon Pierce and other running backs for roles in the Houston backfield, Drew Dougherty of houstontexans.com reports.
Pierce reportedly is making a strong impression, but it seems like a wide-open competition, and Mack is the only one with experience working as an NFL lead back. That was years ago, of course, and he's taken only 28 regular-season carries since suffering an Achilles tear in Week 1 of 2020 with the Colts. Mack did run for 908 yards and nine touchdowns in 2018 (195 carries - 4.7 YPC), followed by 1,091 yards and eight TDs in 2019 (247 carries - 4.4 YPC).