Kelley has a physical, durable frame at 6-foot-2, 200 pounds. The arm path is clean and full in the back coming out of a high-3/4 slot with a fast hand out front. Kelley has touched 99 in game while sitting 95-97. The velocity is premium on its own, but he does it with extreme ease and the ball jumps out of his hand. Kelly’s slider has been inconsistent in the past, but he has developed another plus pitch in his changeup. He has excellent feel for it, as it sits in the 80-84 range with power sink and fade.