The Miami Dolphins announced they signed EDGE Amari Gainer to the practice squad and released DL Keith Cooper Jr. in a corresponding move.
Roster Moves | We have signed edge Amari Gainer to the practice squad and released defensive lineman Keith Cooper Jr. from the practice squad. pic.twitter.com/Qlzvt3noFg
— Miami Dolphins (@MiamiDolphins) October 8, 2026
Miami’s practice squad now includes:
T Gottlieb Ayedze
S Major Burns
RB Jarquez Hunter
EDGE Rodney McGraw
WR Jalen Reagor
TE Tre Watson
WR Will Sheppard
CB Jaylin Simpson
DL Mazi Smith
CB Ethan Bonner
EDGE Max Llewellyn
LB Liam Anderson
WR A.J. Henning
DT James Ester
DE Eric Watts
RB Carlos Washington
EDGE Amari Gainer
Gainer, 26, originally signed with the Raiders as an undrafted free agent out of North Carolina in 2024 and wound up cracking their active roster as a rookie. He was among Las Vegas’ final roster cuts coming out of training camp in 2025 and signed with the Patriots’ practice squad in December.
New England re-signed him to a futures deal in January, but he was also among their final cuts in August. The Dolphins signed him to their practice squad last month.
In 2024, Gainer appeared in all 17 games for the Raiders and recorded five tackles.