Due to NASCAR rules changes that took effect in 2011, drivers must now select one of the top three touring series and be eligible for the driver points championship in that class only. This prevents Cup Series regulars from also competing for points in the lower series. Before these changes, the last series regular to win the Nationwide Series points title was Martin Truex Jr., winning in 2004 and 2005. Despite these changes, Cup drivers have continued their dominance, shifting their focus to winning the owners' championship. In the five years following the rule change, the owners' champions were the #60 team of Roush Fenway Racing with Carl Edwards racing the majority of the season in 2011, the #18 with various Joe Gibbs Racing drivers in 2012, and the #22 of Team Penske from 2013 to 2015 with Brad Keselowski and Joey Logano running the majority of the races.