Clark played in his 300th career NHL game against the Los Angeles Kings. On August 27, 2007, Clark signed a two-year contract extension with the Avalanche prior to the 2007–08 season. He again led the NHL in shifts per game before he was sidelined for the rest of the regular season and playoffs after suffering a dislocated shoulder on February 12, 2008. In 2008–09 Clark returned to set an Avalanche record of 238 hits, second in the NHL, but struggled offensively in recording 12 points in 76 games. In the 2009–10 season, on January 29, Clark appeared in his 500th career NHL game against the Dallas Stars. After eight seasons within the Avalanche organization Clark left as a free agent to sign a two-year contract with the Tampa Bay Lightning on July 5, 2010. In the 2010–11 season, Clark was re-inserted on the powerplay with the Lightning and produced 9 goals for his highest total since 2007, helping the Lightning advance to the 2011 Eastern Conference finals. A free agent upon the 2012 NHL lockout, Clark signed an AHL contract with the Oklahoma City Barons during the midpoint of the 2012–13 season on January 21, 2013. Clark immediately established himself within the Barons producing 17 points in just 18 games. On March 13, 2013, Clark signalled his return to the NHL after he was signed to add a veteran presence for the remainder of the season with the Minnesota Wild. Clark primarily was used as a reserve defensemen however played in 8 games with the Wild, compiling 1 assist. A free agent again well into the 2013–14 season, Clark signed a professional try-out with the Lake Erie Monsters on December 6, 2013, marking a return of sorts to NHL affiliate, the Colorado Avalanche. Unable to help the Monsters qualify for the playoffs, Clark was still able to contribute from the blueline with 6 goals and 14 points in 53 games. Prior to the 2014–15 season, Clark announced the end of his playing career but remained in the Avalanche organization by accepting a player development consultant position. Personal life Brett is married to Candace and has 2 kids; son Cail, born in 2003, and daughter Ava, who was born December 10, 2007. He is the nephew of NHL hockey player Dave Dunn. On July 5, 2018, Clark was formally sworn in as a United States citizen, having resided in Denver, Colorado