ITP 163 - Lucky & Unlucky Relievers
The In The Pen podcast dives deep into the chaotic state of MLB bullpens, revealing that the league's reliever landscape is defined not by stability, but by a high-stakes game of musical chairs. With key injuries to elite arms like Josh Hader, Kenley Jansen, and Graham Ashcraft, teams are scrambling for answers, leaving fantasy managers to navigate a minefield of volatile roles. The episode exposes a stark divide: some relievers are enduring brutal bad luck (like Jeff Hoffman and Will Vest), whose inflated ERAs mask elite underlying performance, while others are thriving on unsustainable fortune (like Aroldis Chapman and Antonio Sensatella), whose sub-2 ERAs are propped up by fluky batted-ball luck. The real takeaway? In June, the most valuable fantasy assets aren't necessarily the best pitchers, but the ones whose stats are most out of sync with their true talent—making them prime 'buy low' or 'sell high' candidates. The episode culminates in a powerful argument: in fantasy baseball, the most profitable strategy isn't chasing the current leader, but identifying the pitcher whose numbers are lying to you. The key insight is that the most valuable relievers aren't the ones with the lowest ERA, but the ones with the biggest gap between their actual ERA and their expected ERA.
Target relievers with a 2+ run gap between ERA and ERA estimator (e.g., Will Vest, Pete Fairbanks) as 'buy low' candidates.
Avoid pitchers with sub-2 ERA but high ERA estimator averages (e.g., Aroldis Chapman, Sensatella) as 'sell high' opportunities.
A 15%+ walk rate combined with a low ERA is a red flag for unsustainable performance.
Injuries to elite relievers (Hader, Jansen, Ashcraft) create cascading opportunities for overlooked arms.
Pitchers with declining strikeout rates and rising walk rates (e.g., Devin Williams, Craig Kimbrell) are due for regression.
…and 3 more takeaways available in PodZeus
Welcome to In The Pen: The Reliever Landscape in June
Jake Crumpler and Rick Graham introduce the podcast, setting the stage for a deep dive into the current state of MLB bullpens, emphasizing the instability and uncertainty surrounding closer roles as the season progresses.
Key Transactions and Injuries: The Domino Effect
The hosts break down major roster moves and injuries, including Drew Pomerantz's return, Justin Lawrence's trade to the Twins, and the significant absences of Josh Hader, Kenley Jansen, and Graham Ashcraft, highlighting how these changes are reshaping bullpen dynamics.
The Rise of the Unlucky: Will Vest and Jeff Hoffman
The episode shifts focus to relievers whose poor ERAs don't reflect their true talent, with Will Vest and Jeff Hoffman cited as prime examples of pitchers who are being unfairly punished by bad luck and are likely to improve.
The Fall of the Lucky: Kyle Finnegan and Aroldis Chapman
The hosts analyze relievers whose impressive ERAs are built on unsustainable luck, warning fantasy managers that pitchers like Kyle Finnegan and Aroldis Chapman are due for a significant regression in performance.
The Data-Driven Edge: ERA Estimators and Predictive Metrics
Rick Graham explains the four key ERA estimators used in the analysis—XFIP, Sierra, XERA, and PCRA—and how they provide a more accurate picture of a reliever's true performance than ERA alone.
“It's like when you're making a meal and you have all these great ingredients and you put it in there and it just tastes terrible. Is it the chef? Did you overcook it or what is it? Jeff Hoffman's not cooking.”
“But, yeah, you don't need to hold on to him and save only leagues yet. But probably still someone to monitor because not a lot of stuff in that bullpen, but he certainly is one of the guys who when he's pitching well, like he does have better stuff than pretty much anyone in that bullpen.”
“You know, the velocity is starting to kind of creep back, but still it's weird. Like the sinker velocity is technically like the same as last year, but the forcing velocity is down like three miles per hour, which I'm not quite sure how that's being, yeah, how that's happening or what's going on there.”
Host
Guest
Rick Graham
person
Jake Crumpler
person
Will Vest
person
Lucas Erceg
person
Trevor McGill
person
Jeff Hoffman
person
Josh Hader
person
Aroldis Chapman
person
Kenley Jansen
person
Pete Fairbanks
person
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