Positive: Undersized but athletic college pass rusher with potential at a number of positions in the NFL. Breaks down well, uses his hands to protect himself and gets leverage on opponents. Intense, plays with a nonstop motor and flies around the action trying to make positive plays. Fluid changing direction, displays speed off the edge, and can pursue from the back side. Plays with good lean and is rarely off his feet. Fluid getting out to the sidelines to string plays laterally.
Negative: Does not possess a great closing burst of speed. Easily out-positioned from the action. Can be handled by a single blocker.
Analysis: Keiser is a developing defender who consistently makes plays behind the line of scrimmage. He can be used in a three-point stance or standing up over tackle and should get better as he physically matures."