Arenas is a short, well-built player with good athleticism for the position. He is an aggressive player that is a willing run support defender as well as an effective blitzer off the edge. Not a physical tackler due to lack of size but will get ball carriers down. Javier uses his hands well to ward off blockers but again can be inconsistent in this area. He shows great instincts in coverage but lacks good balls skills to make the interception consistently. Arenas understands route progressions well and anticipates break points to make plays on the ball. Arenas will likely be best suited as a nickel back and special team’s contributor as a returner.

Like most defensive backs who receive extensive playing time from Nick Saban, Arenas has outstanding instincts and intelligence. Despite being a smaller corner, he plays with great toughness. His quickness and burst allow him to jump shorter routes and come up fast in run support. Has been a highly-productive player in Tuscaloosa. Arenas is also an excellent special team’s contributor.

Arenas lacks height and could have trouble covering taller, wide catch-radius receivers. He’s a raw technician, which was masked a bit in college due to his instincts. Will need to improve this area when matched up against savvy NFL vets. Only possesses average ball skills and drops some catchable interceptions. Fully-developed physically and has likely maxed out his potential.