Ranking the FBs: Leach on top

He has ideal dimensions for the position as well as the kind of temperament you are looking for in a lead blocker. He is a good receiver out of the backfield on the short swing passes, but will struggle when trying to track the ball downfield or make adjustments to balls thrown slightly off target. He will unload into blocks as he rolls his hips, and can react and adjust to movement once engaged.

As a ball carrier, he is effective running between the tackles in short-yardage and goal-line situations. He has good vision to the hole with some ability to adjust and hit the hole with good pad level. He takes good angles to seal for position after attacking the line of scrimmage. He has good overall quickness, agility and balance to secure and sustain his blocks. He also has adequate hands as a receiver out of the backfield. McClain is a great fit for what the Ravens want to be, which is a physical, hard-nosed offensive unit.

He is a good athlete with the ball in his hands and is versatile enough to be effective as a runner or receiver out of the backfield. He runs with good vision, but is primarily a one-cut runner who will get upfield quickly. He is more of an athletic fullback than a power, smash-mouth back, which makes him a good fit in a West Coast system. It remains to be seen how effective Weaver will perform in 2011 given the severity of his knee injury.

He shows adequate speed once he gets to the second level. He gave the Chargers a nice change-of-pace ball carrier who lays it all on the line each and every game. He is a decent receiver out of the backfield, although he is most effective on the short swing passes rather than downfield routes. He still needs work on his blitz pick-up as well as blocking techniques, but definitely brings a lot of value as a role player.

He does a good job squaring up on pass rushers in blitz pickup.