Marx has great size for the fullback position at the BCS level and also displays good playing strength as a ball carrier and blocker. A straight-on runner with a strong stride, but lacks a burst or second gear. A growth spurt could change the equation and present possibilities at the tight end position.
Lines up primarily as a fullback in an up alignment/three-point stance. He shows good vision to the line with the ability to locate and get into creases. He isn't an elusive runner but a strong guy capable of earning tough yardage in traffic. As a release route/screen receiver we see a patient runner, looking to pick up blockers downfield.
Although we like his smooth, over-the-pads running style after the catch, we don't see great elusiveness or explosion. This prospect is going to earn yardage the hard way -- by running over defenders.
Displays good power and balance as a run and pass blocker. He is willing to attack defensive ends and linebackers demonstrating good hand use and base and can roll the hips and sustain with good leg drive. Still, he must improve his pop on contact. Does a nice job working inside and digging out opponents and is very good working off the edge and locating defenders well down the field. A tough customer who stands in when pass protecting and shows good balance and bend with better than average hand use. He's alert and shows the ability to pick up stunts after a ball fake.
Marx possesses the qualities one looks for when evaluating the fullback position. Size, strength and toughness along with inside running ability are important, and blocking with short-to-medium route running and ball catching skills are also a necessity. Some time and perhaps a redshirt year might be required to polish his skills prior to challenging for playing time at the BCS level of competition. However once he's ready to play, we see a bright future for Marx.