Moss was born in Denton, Texas in 1984. He attended Billy Ryan High School in Denton, where he was instrumental in helping the Ryan Raiders win their first Texas Class 4A state championship. He played in the 2003 U.S. Army All-American Bowl, and was recognized as a Parade magazine high school All-American.
College career
Moss accepted an athletic scholarship to attend the University of Florida in Gainesville, Florida, where he played for coach Ron Zook and coach Urban Meyer's Florida Gators football teams from 2004 to 2006. Memorably, Moss blocked two crucial kicks in the fourth quarter of the Gators' 2006 victory over the South Carolina Gamecocks. The first block stopped a Gamecock point after touchdown to keep South Carolina's lead at 16–10. The second was a block of a would-be game-winning field goal for South Carolina with eight seconds left on the game clock, and secured a 17–16 victory for the Gators. He was named a first-team All-American by Pro Football Weekly after the 2006 season. Moss declared for the 2007 NFL Draft following the Gators' victory in the 2007 BCS National Championship Game.
The Denver Broncos traded up in the draft with the Jacksonville Jaguars to select Moss 17th overall. The Jaguars used the pick from the Broncos to select Reggie Nelson, one of Moss' Florida Gators college teammates. Bench press: 365 lbs
Squat: 415 lbs
Denver Broncos
During the season, Moss played in six games for the Denver Broncos. He recorded 12 tackles and 1 sack. Moss broke his shin in practice on November 1, 2007, and was placed on injured reserve on November 2, 2007, ending his season. During the season, Moss played in 12 games, recording 12 tackles and 2.5 sacks. The Broncos' new defensive coordinator, Mike Nolan, moved Moss to outside linebacker, after he had spent his entire NFL career as a defensive end. During the 2009 training camp, it was reported that Moss was contemplating retirement because of struggles adapting to the defensive schemes. After several days of contemplation, Moss returned to practice and made the Broncos' 53-man roster after a pre-season performance that included three tackles, one sack and one forced fumble. After All-Pro Elvis Dumervil's potentially season-ending injury, Moss was announced to be the top candidate to take over as the starting outside linebacker.
Oakland Raiders
On November 17, 2010, Moss was released by the Denver Broncos. On November 23, 2010, Moss was signed by the Oakland Raiders to play defensive end, replacing the injured Trevor Scott. On July 26, the Raiders resigned Moss to a one-year, $1.25 million contract. He played in thirteen games during the season, all but one of them in reserve. Following the season, his one-year contract expired and he became a free agent.