McKinnon showed flashes of upside last season in a backup role for the Vikings behind Dalvin Cook and eventually Latavius Murray, highlighted by career highs in rushing yards, catches, receiving yards and TDs. While his 3.8 YPC wasn't all that impressive, McKinnon performed well enough on the ground that the 49ers snapped him up in free agency to replace Carlos Hyde, inking him to a four-year, $30 million deal. McKinnon's raw athleticism has always been his calling card after a big combine catapulted the converted college option QB into the third round of the 2014 draft, and he's finally begun adding football skills to his speed, power and burst, honing his craft as both a receiving option and pass blocker. He still lacks the vision and patience as a runner to take full advantage of his gifts, but moving into Kyle Shanahan's offense drastically altered his ceiling. Unfortunately for the 49ers, the plan fell apart shortly before Week 1 when McKinnon suffered a torn ACL during practice. Breida and Alfred Morris are now expected to split work in the backfield. Read Past Outlooks