The Mariners announced on Thursday that they picked up reliever Andrés Muñoz's 2027 club option, but declined options for right-hander Bryce Miller and outfielder Victor Robles.
Miller will remain under club control. Robles is now a free agent, joining OF Randy Arozarena, INF J.P. Crawford, LHP Hoby Milner and OF Taylor Ward. All five players are eligible to sign with any club starting at 2 p.m. PT on Monday, Nov. 2.
The Mariners' 40-man roster is now at 34 players.