Despite suffering a fractured right hand in practice on June 20, Allen returned to play by the end of the preseason and started all 16 games. His blocking helped limit the Cardinals to one sack while protecting Randall Cunningham as he completed 24-of-34 passes for 243 yards and three touchdowns on September 10. His blocking against Arizona on October 22 was key to the offense as it recorded 347 total yards, including 200 rushing yards. He allowed just one sack. He helped limit Warren Sapp to two tackles for the game in Tampa Bay, on December 3, while the entire Tampa Bay starting defensive line was limited to six tackles. He was also part of an offensive line that helped Smith rush for 150 yards and a touchdown against the Redskins and the NFL's fourth ranked defense on December 10. The Cowboys rushed for 242 yards against the Redskins for most by Dallas offense since recording 271 rushing yards in Philadelphia on Halloween 1993.