Exhibits good range for a big guy and is simply too athletic for most offensive linemen to move with on slide down blocks. However, lacks ideal awareness vs. the inside run game. Puts himself in position to make a lot of plays, but often fails to find the football. Also, lacks ideal girth and an overall pad level to sit into his stance and anchor inside when run at. Possesses good natural strength and length, but is much more effective as a one-gap guy creating havoc inside before plays develop.
Displays good short-area quickness off the line vs. the pass game and has the ability to quickly get out of his stance and stunt/loop inside. Also, possesses the ability to threaten gaps as a one-gap guy and make his way up the field. However, struggles to keep his pad level down through contact. Gets too upright once he gains a step and can be easily pushed past the play.
Does display some natural lower body strength on his bull rush though and uses his length well to get under blockers and fight himself free. Displays some suddenness to his game when asked to shed and exhibits good closing speed, accelerating quickly up the field once he gains a step. Also possesses a smooth spin move he loves to work back inside in order to free himself from blockers.
Missed a lot of time in 2009 with an ankle injury and lost his starting job because of it.
Impression: A long, gifted athlete who is explosive, uses his length to fend off blocks and can make plays off his frame. Needs to learn to play with a more consistent pad level in both areas of the game. However, he's a size/speed lineman who is definitely worth at least a look in an NFL camp. He's got me intrigued as a developmental 5-techique guy in the NFL."
Positive: One-time highly thought of prospect who's struggled with injury the past two years. Resilient, flashes power in his lower body, and keeps his feet driving up the field. Adequate changing direction and displays the ability to collapse down the line of scrimmage and pursue the action. Has solid first-step quickness and wedges through blocks.
Negative: Does not always play with a sense of urgency. Must develop more moves with his hands. Marginally productive in college.
Analysis: Marsh offers terrific size and looked well on his way to being a top prospect after the 2008 season before struggling with an injury. He appears to have lost some explosiveness, but he must be given a chance based on his measurables."