Chris Johnson's return -- for less money even -- was somewhat a surprise (and a testament to Arians), because it was blatantly clear David Johnson would get a chance to be a three-down back. Just 24, the second-year back has rare skills to be a between-the-tackles runner, speed to get to the edge, vision on the second level and is very good in the passing game. Of his 581 yards, 442 came in the final five games of the 2015 season. He also added 216 receiving yards over that five-game span.