December 30th, 2017 
Cory Allen 
Posted in 
The Dolphins placed safety Michael Thomas on injured reserve because of the right knee injury he’s been battling for the past month and then claimed a safety off waivers from Buffalo, which happens to be Sunday’s opponent, Omar Kelly of the South Florida Sun-Sentinel reports.
The Dolphins added former Bills safety Trae Elston on Friday evening. Elston, an Ole Miss product, played in 13 games and started one for the Bills this season, contributing 15 tackles, one interception and one pass deflection. He was primarily used as a core special teams contributor.
The Dolphins become the fourth team Elston joined this year. He began the year with the Cleveland Browns but didn’t make it to training camp. The Bills signed him twice last year, re-acquiring him after he spent a couple of weeks in Philadelphia, and kept him until Wednesday.
The Dolphins had to create a roster spot for Elston and used Thomas’ partially torn posterior cruciate injury to do so.
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