FOXBOROUGH, Mass. - The New England Patriots announced today that they have released RB Trey Williams. 

In addition, the Patriots signed DB Rashaan Melvin to the practice squad and released DB Chris Greenwood from the practice squad. 

Williams, 22, was claimed off waivers by New England from Dallas on Dec. 1, 2015. He originally signed with Washington as a rookie free agent out of Texas A&M on May 7, 2015. The 5-foot7, 195-pounder, was released by Washington at the end of training camp and began the season on the Redskins' practice squad. He was signed by Dallas to the 53-man roster and was inactive for four games before being released by the Cowboys on Nov. 30. 

Melvin, 26, was released by the Patriots on Dec. 8, 2015. The 6-foot-2, 193-pounder, was claimed off waivers from Baltimore and awarded to New England on Oct. 14, 2015. He played in one of Baltimore's first four games in 2015 before being released on Oct. 13. Melvin originally entered the NFL as a rookie free agent with Tampa Bay out of Northern Illinois on May 2, 2013. He made the Tampa Bay 53-man roster as a rookie, but did not play in any games that season. Melvin was with Tampa Bay for the first three games of the 2014 season before being released and signing with the Miami practice squad. He was signed by Baltimore from the Miami practice squad on Nov. 8, 2014, and played in three games with two starts in the regular season and two starts in the postseason. He played in eight games with the Patriots and accumulated three tackles and two special teams tackles. 

Greenwood, 26, was signed to the New England practice squad on Nov. 18, 2015. The 6-foot-1, 197-pounder, is a veteran of three NFL seasons and has had stints with the Detroit Lions, Dallas Cowboys, Minnesota Vikings and Baltimore Ravens. He was originally drafted by Detroit in the fifth round (148th overall) of the 2012 NFL Draft. Greenwood spent his rookie season on the Physically Unable to Perform List and most of 2013 on the Lions practice squad before being added to their 53-man roster late in the season. He appeared in three games and made six tackles. Greenwood spent the first 15 weeks of 2014 on Minnesota's practice squad before being signed to Baltimore's 53-man roster. He was inactive for two regular-season games and both postseason contests. He went to training camp with Baltimore this year and was released prior to the start of the regular season.