Miami Dolphins defensive back Will Allen (25) intercepts a pass intended for Dallas Cowboys cornerback Chris Randle, left, during the first half of an NFL pre season football game on Thursday, Sept. 1, 2011, in Miami. (AP Photo/Hans Deryk)

Miami Dolphins running back Larry Johnson (23) runs for a touchdown during the first half of an NFL pre season football game against the Dallas Cowboys, Thursday, Sept. 1, 2011, in Miami. (AP Photo/Hans Deryk)

Dallas Cowboys quarterback Stephen McGee (7)) is sacked by Miami Dolphins linebacker Jason Trusnik during the first half of an NFL preseason football game on Thursday, Sept. 1, 2011, in Miami. (AP Photo/Hans Deryk)

Miami Dolphins wide receiver Marlon Moore regains control of a pass as he is tackled by Dallas Cowboys cornerback Chris Randle, rear, during the second quarter of a preseason NFL football game, Thursday, Sept. 1, 2011 in Miami. (AP Photo/Wilfredo Lee)

Miami Dolphins running back Daniel Thomas (33) runs for yardage during the second quarter of a preseason NFL football game against the Dallas Cowboys, Thursday, Sept. 1, 2011, in Miami. (AP Photo/Wilfredo Lee)

Dallas Cowboys quarterback Stephen McGee (7) looks to pass during the first half of an NFL pre season football game against the Miami Dolphins, Thursday, Sept. 1, 2011, in Miami. (AP Photo/Wilfredo Lee)

Miami Dolphins running back Larry Johnson (23) escapes the grip of Dallas Cowboys defensive back Barry Church (42) to score a touchdown during the first half of an NFL preseason football game on Thursday, Sept. 1, 2011, in Miami. (AP Photo/Wilfredo Lee)

Dallas Cowboys defensive tackle Sean Lissemore (95) looks at the scoreboard as the Cowboys fall behind the Miami Dolphins during the second half of an NFL pre season football game on Thursday, Sept. 1, 2011, in Miami. (AP Photo/Wilfredo Lee)

Dallas Cowboys cornerback Chris Randle (33) tackles Miami Dolphins wide receiver Clyde Gates (10) during the second half of an NFL preseason football game on Thursday, Sept. 1, 2011, in Miami. (AP Photo/Hans Deryk)

Dallas Cowboys quarterback Stephen McGee (7) looks to pass during the first half of an NFL preseason football game against the Miami Dolphins, Thursday, Sept. 1, 2011, in Miami. (AP Photo/Wilfredo Lee)

Miami Dolphins linebacker Jason Taylor (99) and Reggie Bush talk on the sidelines during the first half of an NFL pre season football game against the Dallas Cowboys, Thursday, Sept. 1, 2011, in Miami. (AP Photo/Hans Deryk)

Dallas Cowboys linebacker Alex Albright leaves the field during the second half of an NFL preseason football game against the Miami Dolphins, Thursday, Sept. 1, 2011, in Miami. (AP Photo/Wilfredo Lee)

Dallas Cowboys wide receiver Raymond Radway is taken away after an injury during the fourth quarter of a preseason NFL football game against the Miami Dolphins, Thursday, Sept. 1, 2011, in Miami. The Dolphins defeated the Cowboys 17-3. (AP Photo/Wilfredo Lee)

Dallas Cowboys head coach Jason Garrett, right, talks to line judge Ron Phares after challenging a call during the fourth quarter of a preseason NFL football game against the Miami Dolphins, Thursday, Sept. 1, 2011, in Miami. The Dolphins defeated the Cowboys 17-3. (AP Photo/Wilfredo Lee)

Dallas Cowboys quarterback Tom Brandstater (4) slips away from the tackle of Miami Dolphins linebacker Quinton Spears (48) during the second half of an NFL preseason football game on Thursday, Sept. 1, 2011, in Miami. The Dolphins defeated the Cowboys 17-3. (AP Photo/Hans Deryk)

Miami Dolphins head coach Tony Sparano smiles from the sidelines during the second half of an NFL preseason football game against the Dallas Cowboys, Thursday, Sept. 1, 2011, in Miami. (AP Photo/Hans Deryk)

Dallas Cowboys head coach Jason Garrett, left, and Miami Dolphins head coach Tony Sparano meet at midfield after the Dolphins defeated the Cowboys 17-3 in a preseason NFL football game on Thursday, Sept. 1, 2011, in Miami. (AP Photo/Wilfredo Lee)