Last season, running back Chris Johnson shot into the first round behind a 4.24 40-yard dash. In 2006, tight end Vernon Davis practically earned an Under Armour contract based solely on his Combine performance. The Combine can go the other way for prospects. Michigan running back Mike Hart ran himself into the sixth round with a poor 40 time. Fringe draftable players have tested out of the draft. With several hundred players partaking in this year’s Combine, just what should you watch for between now and Tuesday when it winds down? Here are a few things to watch for over the next several days:NFL Scouting Combine preview - Mocking The Draft We'll have some more Combine info around lunch time.