The Colts selected Mack in the fourth round of the 2017 NFL Draft, 143rd overall.
This could get interesting. The Colts are very thin in the backfield, where Frank Gore, Robert Turbin and Josh Ferguson may form the league's worst top three. Mack (5-foot-11, 213 pounds) is an explosive runner who enjoyed extreme success at South Florida, running for 3,609 yards (6.2 YPC) and 32 touchdowns in 36 games. The South Florida system opened generous running lanes and Mack didn't have to interpret much, so he may need some refining before fitting into an NFL-style offense. But if he does, his 4.5 speed should earn him reps in a backfield that just doesn't have any good competition.