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Mariners, Bullpen Coach Brian DeLunas To Part Ways

Mariners bullpen coach Brian DeLunas will not return next season, reports Corey Brock of the Athletic (Twitter link). As Brock notes, DeLunas originally joined the organization in a front office capacity entering the 2018 season. He became the club’s bullpen coach last November.

DeLunas’ only season in that position certainly wasn’t a banner year for the team’s relievers. The Mariners’ pen was worth a league-worst 1.5 wins below replacement, in FanGraphs’ estimation. Cumulatively, Seattle relievers pitched to a 5.92 ERA/5.81 FIP.

Of course, that’s hardly all the fault of DeLunas. The M’s bullpen personnel was lackluster, especially after Austin Adams and Dan Altavilla were traded to the Padres mid-season. The end of games is a clear area of focus moving forward, as GM Jerry Dipoto acknowledged the club will need to bring in “three or four” outside arms this winter.

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