The Mariners released Chen on Saturday, Andersen Pickard of MLBDailyDish.com reports.
Chen posted a solid two-inning outing all the way back in late February, but even a likely six-man rotation to open the season apparently won't do enough to keep him in uniform with the club when the regular season opens. Chen tossed 68.1 relief innings to poor results with the Marlins last year and may have a tough time finding a home for the start of 2020.