The Cleveland Browns were impressed with what they saw from Florida QB Tim Tebow during his Pro Day workout; however, team president Mike Holmgren still has reservations about Tebow's mechanics. "I just think in the heat of battle guys will usually revert (to old form)," Holmgren said. "I think, and I told him this, that he was so thinking about his mechanics that at times it looked a little robotic ... Now, he did fine. I like the kid so much. He is strong and throws it hard. You can't bet against guys like him because he'll work hard to do this. He's going to make some team really happy."