Indianapolis Colts take USF’s Marlon Mack in 4th round

University of South Florida running back Marlon Mack dropped a little lower than he hoped, but now knows where he will be heading to training camp in three months. The Indianapolis Colts took him with the next-to-last pick of the fourth round of the NFL Draft. Some mock drafts had him slotted for the third round. Mack was a first-team all-American Athletic Conference selection in all three years that he played in Tampa. Over that span he averaged 100 rushing…