Dallas Cowboys restricted free agent defensive end Marcus Spears is not attending the team's voluntary "Organized Team Activity" sessions today, reports Todd Archer of the Dallas Morning News.

A first-round pick (20th overall) out of LSU in the 2005 NFL Draft, Spears has started 71 of his 80 regular season games with the Cowboys, totaling 166 tackles and 8 quarterback sacks. Despite his status as a starting defensive end, the Cowboys tendered Spears at the "Original Round" level, which carries a $1.226 million dollar base salary for 2010.

The 6-4, 309-pound Spears has signed his one-year tender.