Nelson has spent time with the Colts and Jacksonville Jaguars after being signed as an undrafted free agent out of Southern Mississippi. Nelson recorded 202 tackles with five interceptions and a forced fumble during his college career. He has yet to appear in a regular season game.
Baker had been placed on the list on July 31 before being activated on Monday.
Perry was a quarterback at the Naval Academy and set an FBS quarterback record with 2,017 rushing yards last year.
Dolphins claim cornerback Picasso Nelson off waivers originally appeared on Pro Football Talk