Updated

Irving, TX (SportsNetwork.com) - The Dallas Cowboys waived defensive end Michael Sam from the practice squad on Tuesday to make room for a linebacker who recently worked out for the team.

Sam, the first openly gay player in the NFL, was signed on Sept. 3 after being waived by the St. Louis Rams, who drafted him in the seventh round.

The former SEC Defensive Player of the Year at Missouri spent the first seven weeks of the season on the Cowboys' 10-man practice squad without making the 53-man roster.

"I want to thank the (family of team owner Jerry Jones) and the entire Cowboys organization for this opportunity, as well as my friends, family, teammates, and fans for their support," Sam wrote on Twitter.

"While this is disappointing, I will take the lessons I learned here in Dallas and continue to fight for an opportunity to prove that I can play every Sunday."

The move opened a spot for Troy Davis, who appeared in four games for the New York Jets as a rookie last season and who worked out for the Cowboys on Monday.

Before he was waived by St. Louis, Sam had 11 tackles and three sacks in four preseason games, including a team-high six stops in the finale against Miami.

Sam publicly declared his homosexuality prior to February's scouting combine.