Karlos Williams was a running back for the null null who earned a 78.3 overall PFF grade in the 2015 season, 7th among 52 qualified running backs. His PFF rushing grade of 80.5 ranked 5th among 52 qualified running backs.
He carried the ball 93 times for 517 rushing yards and 7 touchdowns. Williams averaged 5.6 yards per attempt on the ground.
He forced 19 missed tackles as a runner. He averaged 2.9 yards after contact per attempt, showcasing his power between the tackles. As a receiver, he caught 11 passes on 12 targets for 96 receiving yards and 2 touchdowns.