Diamondbacks Dump Madison Bumgarner, Emblem of a Bygone Pitching Era

It’s not often that a 33-year old player still owed $34 million over two years is designated for assignment, but after a three-inning, seven run performance against the Cardinals on Wednesday that ballooned his ERA to 10.26, the Diamondbacks decided to cut bait on Madison Bumgarner. Things certainly didn’t go the way the D-Backs anticipated after inking him to a five-year, $85 million deal, as he closed out his Arizona tenure with a 5.23 ERA, 5.18 FIP, and 1 WAR in 363 innings.
As a Diamondback, Bumgarner seemed like a shell of his former self, the former Giants ace who was the hero of three separate playoff runs. His numbers went from good to terrible almost overnight, but the writing was on the wall long before he signed with Arizona. After a successful 2016 campaign that ended in his second top-five Cy Young finish, he missed about half of ’17 and ’18 with injuries, one of which was sustained in a dirt bike crash. While his surface-level results in those two seasons held steady with his career norms, his FIP climbed by nearly a full run as he lost much of the strikeout potency that made him so dominant in years past. His fastball, which once sat around 93 mph, lost two ticks and much of its whiff capabilities. The slider/cutter hybrid that he threw with near-equal frequency to the heater also started getting hit harder; batters had an xSLG nearing .500 versus both offerings in his final season as a Giant.
Despite these warning flags, the Diamondbacks still handed him a big contract before the 2020 season, where his performance began to tank. His strikeout rates continued to fall, and the good luck he experienced later in his Giants tenure faded away. It doesn’t help that Bumgarner has been characterized as unwilling to make adjustments even with diminished stuff, instead sticking with his old, clearly ineffective gameplan. In his late-30s, Charlie Morton nearly tripled his curveball usage compared to his early Pittsburgh days and had the best years of his career. Justin Verlander stopped throwing changeups with the Astros and returned to Cy Young form after some middling seasons; his teammate Gerrit Cole started elevating his fastball more, setting strikeout records in the process. Bumgarner, though, stuck with his fastball/cutter diet, despite the fact that in 2022, his four-seamer was the second-worst pitch in baseball, according to Statcast. As hitters adapted to crush his weakened stuff, Bumgarner couldn’t or wouldn’t adapt back, leading to an unceremonious end to his time on the Diamondbacks. Read the rest of this entry »







