• Offensive line: The Dolphins kept nine. Lydon Murtha, who entered camp as the third tackle, was released after being sidelined by a foot injury the past week.
Also cut: Andrew McDonald (possibly bound for the practice squad), Will Barker, Ray Feinga and Chandler Burden.
Miami traded center Ryan Cook to Dallas for a seventh-round pick, opting instead to keep undrafted rookie Josh Samuda as the backup center. Will Yeatman, who was moved from tight end to tackle in July, also made the 53, for now.
• Running back: The Dolphins surprisingly kept six: Reggie Bush, Daniel Thomas, Lamar Miller, Steve Slaton, Marcus Thigpen (who has emerged as the primary kickoff returner) and fullback Jorvorskie Lane. Philbin said he likes how Lane breaks tackles but he didnt do great blocking against Dallas.
Slaton said the Dolphins told him there was nothing to a Friday Washington Times report that he would be traded to the Redskins for Armstrong, who was later released.
• Tight end: Miami kept four: Anthony Fasano, Charles Clay, Jeron Mastrud and rookie Michael Egnew.
• Defensive line (eight kept): The Dolphins kept rookie end Derrick Shelby and cut Jamaal Westerman, who had 31/2 sacks for the Jets last season, and also released Jarrell Root. At defensive tackle, the Dolphins chose to keep rookie seventh-round pick Kheeston Randall instead of veteran Ryan Baker and rookie Isaako Aaitui, who is expected to join the practice squad.
• Linebacker (seven kept): Veteran Gary Guyton, who started 32 games for the Patriots over the past four years, was released, leaving Miami with Jason Trusnik, Austin Spitler, Jonathan Freeny and fifth-round rookie Josh Kaddu as its backup linebackers. Cameron Collins and Shelly Lyons also were released.
• Safety: The Dolphins released Anderson Russell and kept four: Reshad Jones, Chris Clemons, Wilson and Tyrone Culver.
For now, the roster has 28 on offense, 22 on defense, plus kicker Dan Carpenter, punter Brandon Fields and long snapper John Denney.