Patriots cut Sterling Moore, sign Mike Rivera and Derrick Martin

The Patriots waived defensive back Sterling Moore on Wednesday, and re-signed linebacker Mike Rivera and defensive back Derrick Martin.

Moore, 22, appeared in 14 regular-season games for the Patriots after being signed off the Raiders’ practice squad Oct. 5, 2011. He was named NFL Rookie of the Week for his two-interception performance against the Bills in Week 17, and played in all three playoff games, including the Super Bowl. He had a limited role this season behind Ras-I Dowling and Alfonzo Dennard, the primary backups to Devin McCourty and Kyle Arrington.

Rivera, who had started this season on the Patriots’ 53-man roster before being released Sept. 19, was signed by the Dolphins the following week, before being released Oct. 3.

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Martin originally signed with the Patriots Aug. 4, but was released after training camp.

The Patriots also terminated the contract of practice squad tight end Alex Silvestro.