Las Vegas Raiders' running back Alexander Mattisonhad his first opportunity as the team's lead rusher against the Denver Broncos in Week 5, but Denver's defense mostly stifled him. The sixth-year pro had just 38 yards on 15 carries, good for 2.5 yards per carry, and added two receptions on three targets for 23 yards in Sunday's 34-18 loss. Mattison also rushed for a two-point conversion on a touchdown by his backup, Ameer Abdullah. Running room has been challenging for the former Viking to find,...