Positive: Hardworking one-gap plugger with limited upside. Keeps his feet moving up the field, tough to move off the point, and works hard until the whistle blows. Quick off the snap and shows a small-area burst of speed.
Negative: Lacks dominant strength and does not get a lot of push up the field. Cannot quickly change direction. Controlled at the point of attack by a single blocker.
Analysis: Jarka is a competitive defender who makes a lot of plays with his hustle. He possesses a solid frame and could back up in a system that asks him to occupy blockers instead of making plays on the football."