Panthers signed LB David Nixon, formerly of the Rams. An undrafted free agent out of BYU in 2009, Nixon appeared in eight games for the Rams last season, notching six special teams tackles. He won't see snaps on defense in Carolina in the unlikely event he cracks the 53-man roster.

Rams signed LB David Nixon, formerly of the Dolphins. A special teamer, Nixon notched 10 tackles in four games between the Rams and Texans last season. His stay on the active roster could be short.

Dolphins signed LB David Nixon. Nixon was an undrafted free agent out of BYU in 2009. He had spot duty with the Texans and Rams last season as a special teamer.

Rams waived LB David Nixon and DT Teryl White. Nixon racked up four special teams tackles in just two appearances last season, but the Rams determined he couldn't help on defense. White was a 6-foot-5, 290-pound undrafted rookie. He played college ball at North Carolina Central.