Dolphins cut Jonas Gray; Re-sign Sam Brenner

The Miami Dolphins made a not un-expected roster move Tuesday morning, releasing running back Jonas Gray. The Dolphins activated rookie running back Jay Ajayi Saturday ahead of the team's game against the Buffalo Bills, giving Miami four running backs on the roster, then saw the rookie run for 41 yards on five carries. Ajayi's presence on the roster, and his health and ability to effecetively run, essentially made either Gray or Damien Williams expendable.

Gray joined the Dolphins at the start of the season after being released by the New England Patriots. He originally signed as an undrafted free agent with the Dolphins in 2012, before spending his rookie year on the physcially unable to perform list due to a torn ACL he suffered in college. He was released by Miami in the final round of roster cuts in 2013, then spent that year with the Baltimore Ravens' practice squad. The Patriots signed Gray before the 2014 season, where he found occassional success, including a 201-yard, 4-touchdown performance against the Indianapolis Colts. He eventually disappeared from the Patriots' offense, before being released at the end of this year's preseason.

Gray had 31 carries for 122 yards with the Dolphins this season, splitting time throughout the year between the practice squad and the active roster.

The Dolphins re-signed center Sam Brenner, who they released on Saturday when they activated Ajayi, to fill the roster spot.

Gray could be quickly added to an NFL roster as the Patriots, who placed Dion Lewis on injured reserve this week with a torn ACL. It would make sense for the Patriots to grab Gray, a running back they know, to provide depth to the position.