Mariners Begin to Address Their Historically Bad Bullpen
After going all in on their rebuild in 2019, the Mariners have cycled through what seems like a million different pitchers in just two years. (The real figure is 61, the highest number of pitchers used by any team over the last two seasons.) That shouldn’t be surprising considering general manager Jerry Dipoto’s reputation for roster churn and the team’s goal of building a contender in just a few years time; scouring the waiver wire and the Mariners’ minor league system for pitchers who might show enough promise to stick around for a while requires a constant flow of transactions.
Finding plenty of lumps of coal in their quest to uncover those hidden gems, Seattle’s bullpen has been particularly bad as the team prepares to contend again. Over the last three decades, no relief corps has posted a league- and park-adjusted FIP worse than the 2020 Mariners, 33% below league average. They would have had the worst league- and park-adjusted ERA too if it weren’t for the 2020 Phillies’ atrocious bullpen and their 7.06 ERA. When we adjust their collective strikeout-to-walk ratio for their historical context, the 2020 Mariners had the fourth worst K/BB+ in that period, 37% worse than league average.
With their eyes set on coming out of their rebuild as early as next year — but more realistically in 2022 — Dipoto has made addressing that historically bad bullpen a primary goal of this offseason. The Mariners already re-signed Kendall Graveman, one of the few bright spots in the bullpen this year, and selected Will Vest in the Rule-5 draft last week. Yesterday, they took another next step in bolstering their bullpen by acquiring Rafael Montero from the Rangers. In return, 17-year-old prospect Jose Corniell and a Player To Be Named Later are headed to Texas. Read the rest of this entry »