Gruden spends day tutoring NFL-hopeful Tebow TAMPA - Jon Gruden's winter tutorial with the top quarterback prospects in the 2010 NFL Draft rolled on Thursday when Florida's Tim Tebow arrived in Tampa for a strategy session in Gruden's office and a private workout at Carrollwood Day School. Tebow started the day with a visit to Gruden's office, where the former head coach of the Tampa Bay Buccaneers used a grease board to diagram formations and prepare Tebow for the complexities of NFL defenses. In the afternoon, Tebow and Gruden hit the practice field to work on his throwing mechanics two weeks before Tebow works out for NFL executives in Gainesville at Florida's Pro Day. "I love quarterbacks and today I had a blast," Gruden said. "How can you not root for Tim Tebow? He's a courageous, competitive, play-making, undeniable force. I think he's going to be a great success." Gruden spends day tutoring NFL-hopeful Tebow