Mack rushed five times for 37 yards and a touchdown in Sunday's 24-15 win over Arizona. He added four receptions on four targets for 26 yards.
Mack worked clearly behind Latavius Murray in the Denver backfield, recording only nine touches compared to Murray's 25. However, Mack was able to provide a few explosive plays, highlighted by a three-yard touchdown run late in the third quarter and a 17-yard run early in the fourth. While Mack's role remains relatively minimal, he is the clear backup running back in Denver and has scored in consecutive contests.