Young was not selected in the draft. As an undrafted free agent, he signed a free agent contract with the
Denver Broncos on May 1, 2007. After impressive performances in the team's exhibition games, head coach
Mike Shanahan named Young the #2 running back, behind starter
Travis Henry. In Young's first ever start, he notched 120 total yards from scrimmage against the
Green Bay Packers, filling in for an injured Henry. He also saw playing time as a kick-off returner. Young recorded his first career 100-yard rushing game and first career rushing touchdown on November 11, 2007, in an away game against the
Kansas City Chiefs. He rushed for 109 yards on 20 attempts. His touchdown run was a 20-yarder in the third quarter of the game. The Broncos won, 27–11, which was their first victory at
Arrowhead Stadium since 2002. His two best games of the
2007 season were against the
Kansas City Chiefs, when he rushed for over 100 yards and over 5 yards a carry in both contests. Both games were coincidentally the only 100 yard games he had in the
2007 season. Young finished the 2007 season playing 15 games (8 starts), with 729 rushing yards on 140 attempts (5.2 rushing average) and 1 rushing touchdown. He was the Broncos leading rusher that year. Young was the opening day starter in 2008, but an injured groin kept him out of 7 or 8 games between weeks 6 and 14. He returned for two more games but suffered what proved to be a career-ending neck injury in the 2nd to last game of the season. On April 30, 2009, Young was waived by the Broncos. ==References==