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Joe Mahoney, Associated Press
Denver Broncos quarterback Tim Tebow (15) stiff-arms Chicago Bears defensive end Israel Idonije (71) in the first quarter of an NFL football game, Sunday, Dec. 11, 2011, in Denver.

ENGLEWOOD, Colo. — Tim Tebow's fans want to know what else the man has to do to win over the Denver Broncos' brain trust.

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He's won seven of eight games since taking over as their starting quarterback, turning a team that was foundering at 1-4 under Kyle Orton into an improbable playoff contender at 8-5, atop the AFC West.

Still, coach John Fox is reticent about committing to Tebow for the long term, saying he'd rather focus on the task at hand, which is ending Denver's five-year playoff drought.

Football chief John Elway created an Internet firestorm last month when he said that he didn't know if his QB of the future was on the roster. He's since smoothed things over with Tebow and pledged to work with the unconventional quarterback in the offseason.