ADVANCE FOR WEEKEND EDITIONS, AUG. 25-26 - This Aug. 14, 2012 file photo shows Mark Sanchez, left, and Tim Tebow set to throw during drills at New York Jets training camp in Cortland, N.Y. ... more 

ADVANCE FOR WEEKEND EDITIONS, AUG. 25-26 - This Aug. 14, 2012 file photo shows Mark Sanchez, left, and Tim Tebow set to throw during drills at New York Jets training camp in Cortland, N.Y. Two-quarterback systems have rarely worked, but the Jets plan to test that theory with Sanchez and Tebow this season. (AP Photo/Kevin Rivoli, File) less