On Sunday, the Broncos signed Josh Barrett, Mitch Erickson, Darrell Hackney and Steven Harris to their practice squad.

Barrett is a rookie from Arizona State University, a seventh-round pick in this year’s NFL Draft. He played in all four Denver preseason games in 2008, ranking fourth on the club in defensive tackles and tying for third in special-teams stops.

Erickson is an undrafted rookie out of South Dakota State University. He appeared in all four preseason games for Denver in 2008 following a collegiate career in which he received first-team All-America honors from the Associated Press as a senior at SDSU.

Hackney is a second-year quarterback out of the University of Alabama-Birmingham. He spent the final eight games of the 2007 season on the team’s active roster, and played in all four preseason games in 2008. He completed 24-of-38 passes for 285 yards with one touchdown and no interceptions, good for a 94.7 quarterback rating.

Harris is another second-year player who attended the University of Florida. Harris, who saw time in all four preseason contests for Denver in 2008, played four games for the Broncos in 2007 and totaled six tackles.

The Broncos may have up to eight players on their practice squad.