May 21, 2026 – The league unveiled its first official MLB Relief Pitcher Rankings of the season, ranking 30 relievers based on ERA+, leverage index and spin rate. The list, released by a panel of analysts, puts New York Mets’ closer Jacob deGrom Jr. at No. 1 after a 1.12 ERA over 45 innings.
Analysts say the rankings will influence fantasy drafts, arbitration talks and bullpen construction as clubs chase late‑inning stability. The panel incorporated data from MLB.com’s recent power‑ranking methodology, adapting it for relievers.
How the rankings were built
The rankings combine traditional stats with advanced metrics such as FIP, leverage‑adjusted ERA and spin‑rate differentials. Each metric is weighted to reflect a reliever’s impact in high‑leverage situations, a shift from the starter‑centric formula used earlier this year.
Which arms topped the list and why?
Jacob deGrom Jr. leads thanks to a sub‑1.00 ERA, a 0.96 FIP and a 3.2 % swing‑and‑miss rate that outpaces league average. Behind him, Seattle’s Edwin Díaz posted a 1.45 ERA and a record‑setting 12.3 % strikeout‑to‑walk ratio, while Chicago’s Ryan Pressly earned a spot with a 1.78 ERA and a 0.85 WHIP.
What does this mean for teams and fantasy owners?
Front offices will likely target top‑ranked relievers for mid‑season trades, as bullpen depth now correlates with playoff odds. Fantasy managers should prioritize high‑leverage earners like deGrom Jr. and Díaz, whose WAR contributions exceed 1.5 despite limited innings.
Emerging arms shaping the next wave
Los Angeles Angels’ left‑hander Luis García, a 24‑year‑old rookie who posted a 1.98 ERA and a 14.5 % strikeout rate in his first 30 appearances, cracked the top‑15, signaling a rapid ascent from Triple‑A. His cutter, clocking 96 mph with a spin rate 2,300 rpm above league average, has already drawn trade chatter. Meanwhile, Boston’s veteran setup man Alex Soto, long praised for durability, slipped to No. 22 after a 4.12 ERA, underscoring how quickly fortunes can shift in the bullpen market.
Key Developments
- The panel evaluated 1,200 innings of relief work from the season’s first two months, a larger sample than the starter rankings.
- Rankings were released alongside a new “Leverage Index” dashboard that quantifies each pitcher’s performance in clutch moments.
- Five relievers made their first top‑10 appearance, highlighting the rise of young arms from the minors.
- Teams in the AL West have collectively spent $45 million on bullpen upgrades since the rankings were published, a clear signal of market activation.
What’s next for the bullpen landscape?
Teams with subpar relievers are expected to explore trade markets before the July deadline, especially those in the AL West where bullpen ERA sits above 4.50. The rankings also suggest a shift toward “closer‑by‑committee” models, as clubs experiment with multi‑pitcher high‑leverage packages to mitigate injury risk.
How are relievers evaluated differently from starters in the rankings?
The relief rankings weight leverage index and spin‑rate more heavily, while starters rely on innings pitched and quality‑start percentages. This reflects the higher impact of a single inning for relievers.
Which reliever saw the biggest jump in ranking this season?
Seattle’s Edwin Díaz vaulted from No. 15 to No. 2 after posting a 0.95 ERA in July, a jump attributed to a dramatic increase in his fastball spin rate.
Will the rankings affect arbitration salaries for relievers?
Yes; players ranked in the top five are projected to earn 15‑20 % more in arbitration, according to MLBPA data, because teams view them as playoff‑essential assets.
How might the rankings drive mid‑season trade activity?
General managers are already flagging top‑10 relievers as priority targets; early‑July trade speculation has linked the Mets’ deGrom Jr. with a potential deal for a left‑handed starter, reflecting the premium placed on late‑inning firepower.
