Doug Martin had an outstanding year. This is not news. What is news is that he did so against primarily base defenses -- he wasn't helped much by facing pass defenses, as chronicled by Pro Football Focus.
Doug Martin enjoyed a resurgence in 2015 and this study suggests that he was even better than his raw numbers suggest. Of Martin's 288 carries, 78 percent came when the defense had fewer than five defensive backs on the field. That's the league's fourth-highest mark. Martin averaged 4.8 YPC vs base defenses (10th best) and 5.