'Gillislee, 26, was the Bills' No. 2 running back last season behind LeSean McCoy, rushing 101 times for 577 yards and eight touchdowns. Among NFL running backs with a qualifying number of carries, Gillislee led the league in yards per rush (5.71), rushes per touchdown (12.6), first-down rate on rushes (38.6 percent) and third-down conversion rate on rushes (75 percent).'