Safety Jonathon Amaya and linebacker Mike Rivera were signed by the Dolphins, who waived offensive tackle Ray Feinga and safety Troy Nolan.
Amaya spent last season with the Saints after being traded from Miami on July 28, 2011 in the Reggie Bush deal. Amaya played in 10 games for the Dolphins after being signed as an undrafted rookie in 2010.
Rivera has played in two games for the Patriots this season. He was signed by Miami off Green Bay's practice squad on Dec. 28, 2010.