Sources: Tebow to play in Senior Bowl

One thing Tim Tebow has never backed down from is a challenge. The Florida Gators quarterback has decided to play in the Under Armour Senior Bowl the last week of January in Mobile, Ala., according to sources.

Tebow will play quarterback for the South team, which will be coached by the Miami Dolphins' staff.

The Senior Bowl is closely scrutinized by personnel directors and coaches from all 32 NFL teams. Tebow has received a wide range of conflicting evaluations for his potential as an NFL quarterback. Even though many personnel men have told ESPN he will struggle in the league if he plays quarterback, at least a half-dozen general managers or coaches say he not only will be successful as a pro quarterback, but also is likely to be chosen in the first round.

Two NFL sources, a coach and a GM, said Tebow's performance in the Allstate Sugar Bowl was another strong endorsement in his favor. In that game, Tebow completed 31 of 35 passes for 482 yards and three touchdowns to lead the Gators against Cincinnati to cap a career that included a Heisman Trophy and two national titles.

Former Buccaneers and Colts coach Tony Dungy also has stated that he believes Tebow will be a first-round draft pick who would have a successful NFL career as a quarterback.

Tebow has chosen Memphis-based Jimmy Sexton as his agent.

Chris Mortensen is ESPN's senior NFL analyst.