- All- Rookie Team (1994 )
- 7x All-Pro selection ( 1995, 1996, 1997, 1998, 1999, 2000, 2001)
- 11x Pro Bowl selection (1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006)
- Super Bowl winner (XXX)
- NFL 1990s All- Decade Team
- NFL 2000s All- Decade Team
- Dallas Cowboys Ring of Honor ( 2011)
Allen played as a guard on offense Sonoma State University in Rohnert Park, California. Allen developed at the College outstanding athletic ability and had in addition to protecting his quarterbacks the task freizublocken own running back the way through the enemy defenses. In a game his team was achieved by running game with 334 yards made to achieve a record.
In the 1994 NFL Draft Allen was hired by the Dallas Cowboys in the second round to 46th place. The Cowboys were the dominant football team of the 90s. Numerous star players played in their ranks. The quarterback Troy Aikman, the wide receiver Michael Irvin and running back Emmitt Smith were the nightmare of opposing defenses. Allen understood it perfectly to protect his quarterback from the attacks of the opponent's defensive player along with Nate Newton and later to the Houston Oilers exchanged Center Mark Stepnoski and could also continue to set as a blocker of Emmitt Smith in the scene. In 1995, the Cowboys were able to move under their coach Barry Switzer in the NFC Championship Game against the coached by Mike Holmgren Green Bay Packers. They defeated the led by quarterback Brett Favre team with 38:27. The move into the Super Bowl was the result, in Super Bowl XXX is then met the trained by Bill Cowher Pittsburgh Steelers and was able to defeat with 27:17.
By 2005, Allen played with the Cowboys, and came to a total of 177 games for use. After the 2005 season he was released, but immediately found with the San Francisco 49ers a new employer. Even with the 49ers, he was first-team regular and played for the team from California in the Pro Bowl. On 29 August 2008 he received from the Cowboys again a contract. This had a maturity of exactly one day - so he has started his professional career as a player the Cowboys, but also ended.
Allen played eleven times in the Pro Bowl, the season final game of the best players of the season. He was also on the position of the offensive tackle to use. He is a member of the National Football League 1990s All- Decade Team, the National Football League 2000s All- Decade Team and The Dallas Cowboys 40th Anniversary Team. The Dallas Cowboys honor him on the Dallas Cowboys Ring of Honor in 2013, he was inducted into the Pro Football Hall of Fame.
Off the pitch
Allen is married and has three children. Allen supports with other players of the Cowboys a school for children who suffer from Down's syndrome,