Aug11, 2011; Arlington, TX, USA; Denver Broncos quarterback Tim Tebow (15) scrambles in the second quarter against the Dallas Cowboys at Cowboys Stadium. Mandatory Credit: Matthew Emmons-US PRESSWIRE

Denver Broncos quarterback Tim Tebow, right, breaks a tackle by Dallas Cowboys linebacker Victor Butler during the second quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys linebacker Kenwin Cummings reacts with Brandon Williams after tackling Denver Broncos cornerback Cassius Vaughn during the second quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys defensive end Clifton Geathers, behind, sacks Denver Broncos quarterback Tim Tebow (15) during the second quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/LM Otero)

Denver Broncos safety Kyle McCarthy, right, tackles Dallas Cowboys wide receiver Jesse Holley during the second half of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/LM Otero)

Denver Broncos running back Lance Ball (35) is tackled by Dallas Cowboys linebacker Victor Butler (57) and cornerback Bryan McCann (37) during the second quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/LM Otero)

Denver Broncos quarterback Tim Tebow, left, helps Dallas Cowboys defensive end Jason Hatcher put his helmet back on during the second quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/LM Otero)

Denver Broncos quarterback Kyle Orton looks to pass as Dallas Cowboys defensive end Igor Olshansky defends. during the first quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

As Denver Broncos punter Britton Colquitt holds the ball, placekicker Matt Prater, top, boots a field goal against the Dallas Cowboys during the first quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys placekicker David Buehler, top, watches his first-quarter field goal against the Denver Broncos during the first quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. Mat McBriar is the holder. (AP Photo/LM Otero)

Dallas Cowboys quarterback Tony Romo (9) calls a play against the Denver Broncos during the first quarter of a preseason NFL football game Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys quarterback Tony Romo, left, and Denver Broncos quarterback Tim Tebow talk before a preseason NFL football game Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/LM Otero)

Denver Broncos quarterback Tim Tebow throws during warm-ups before a preseason NFL football game against the Dallas Cowboys Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/LM Otero)

Dallas Cowboys linebacker Victor Butler (57) gets up after tackling Denver Broncos quarterback Tim Tebow during the second quarter of a preseason NFL football game Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Aug11, 2011; Arlington, TX, USA; Denver Broncos running back Willis McGahee (23) runs with the ball in the first quarter against the Dallas Cowboys at Cowboys Stadium. Mandatory Credit: Matthew Emmons-US PRESSWIRE

Aug 11, 2011; Arlington, TX, USA; Denver Broncos quarterback Kyle Orton (8) rolls out to pass against the Dallas Cowboys at Cowboys Stadium. Mandatory Credit: Tim Heitman-US PRESSWIRE

Aug 11, 2011; Arlington, TX, USA; Denver Broncos running back Knowshon Mereno (27) is tackled by Dallas Cowboys line backer Sean Lee (50) during the game at Cowboys Stadium. Mandatory Credit: Tim Heitman-US PRESSWIRE

Aug 11, 2011; Arlington, TX, USA; Dallas Cowboys running back Felix Jones (28) carries the ball against the Denver Broncos at Cowboys Stadium. Mandatory Credit: Tim Heitman-US PRESSWIRE

Dallas Cowboys linebacker Kenwin Cummings, right, reacts with Brandon Williams after tackling Denver Broncos cornerback Cassius Vaughn during the second quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)

Dallas Cowboys defensive end Clifton Geathers, left, sacks Denver Broncos quarterback Tim Tebow during the second quarter of a preseason NFL football game on Thursday, Aug. 11, 2011, in Arlington, Texas. (AP Photo/Tony Gutierrez)