TUSCALOOSA, Ala. -- Barrett Jones digs his left hand into the turf, bends his knees and listens for the whistle. As soon as it comes, he breaks, hovers low to the ground and shuffles under an apparatus built to keep linemen at a low center of gravity.
Jones pops up on the other side and walks a few paces ahead to catch his breath, then circles around to the back of the line. He removes his helmet, wicks away the sweat and politely accepts a sip of water.
A few minutes later, his hand ...
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