Tim Tebow is officially in the NFL books. At 1:05 p.m., Tebow ran up the middle out of the shotgun formation for a gain of one yard as the Denver Broncos began their opening drive against the Jacksonville Jaguars. Jacksonville fans cheered warmly as Tebow entered the game, and then roared as Tebow was stuffed at the line. Two plays later, Tebow lined up at wide receiver.