Antonio "Tiny" Richardson, OT, Tennessee: Once hailed as a potential first-round selection, Richardson's stock is certain to tumble after a disappointing workout on Saturday. The Tennessee standout clocked an underwhelming 5.30-second 40 time and looked like a limited athlete in drills. He didn't exhibit the smoothness or fluidity that scouts expect from an elite edge blocker. Additionally, my colleague Charles Davis floated the possibility of knee issues torpedoing Richardson's stock. While those reports haven't been confirmed, the combination of medical questions and poor performance could knock Richardson down the charts despite the flashes he's shown throughout his career.