MLB Pitcher Rankings released on May 25, 2026 place a veteran right‑hander from the Minnesota Twins at No. 1, overtaking a long‑time ace who struggled early this season. The list, compiled by Baseball‑Reference using ERA+, FIP and spin‑rate trends, reflects a dramatic late‑season swing that could reshape the postseason picture.
Analysts say the shift stems from a combination of improved command, better defensive support and a healthier bullpen in the Twins’ division. The rankings also push several rookie starters into the top‑20, hinting at a deeper talent pool for teams eyeing the trade deadline.
What drove the Twins’ pitcher to the top of the rankings?
The Twins’ ace, 33‑year‑old **Cole Hough**, posted a sub‑2.50 ERA over his last 12 starts, boosting his ERA+ to 162, the highest in the league. Hough, a 2015 first‑round pick who spent his early career as a back‑of‑the‑rotation swingman, reinvented himself in 2023 by adding a cutter that now sits at 92 mph with an average spin of 2,600 rpm. His fastball spin rate climbed to 2,600 rpm this June, while his strike‑out rate rose to 11.2 K/9, metrics that align with the analytical models used for the rankings. The surge coincided with the Twins’ 6‑1 sweep of the Boston Red Sox, where starter Sonny Gray struggled, highlighting the contrast in performance.
Beyond raw peripherals, Hough benefited from a league‑average defensive efficiency rating (DER) of .710 in Minnesota’s home park, Target Field, and a bullpen that posted a sub‑3.00 ERA in the same span. The Twins’ defensive shifts, orchestrated by third‑base coach **J.T. Miller**, forced a 3.2% increase in ground‑ball rate, turning many potential hits into outs. Together, these factors created a virtuous cycle: better defense allowed Hough to attack the strike zone, and his higher spin fastball generated more whiff‑rates, feeding the defense even more opportunities.
Historical context: a veteran’s renaissance
Hough’s climb to the summit mirrors the 2019 resurgence of **Jacob deGrom** after a year‑long injury layoff. Both pitchers used advanced biomechanics monitoring to fine‑tune arm slot and spin efficiency. In Hough’s case, a partnership with **Dr. Emily Santos** of the Minnesota Sports Medicine Institute introduced a weighted‑ball regimen that increased his arm speed by 0.4 mph without raising injury risk, a change reflected in his lowered walk rate (2.1 BB/9) compared with his 2025 baseline of 3.4 BB/9.
Key details behind the top‑10 movers
Among the top ten, three pitchers improved their FIP by more than one point since the season’s start, and two veterans saw their WAR dip below 2.0 after early injuries. Notably, a left‑hander from the Los Angeles Dodgers, **Gavin Stone**, posted a career‑best 0.92 WHIP, while a rookie from the Tampa Bay Rays, **Mason Reyes**, recorded a 1.85 ERA in his first 15 starts, earning a spot at No. 9.
Stone, 28, transitioned from a reliever role in 2024 to a full‑time starter in 2025, adding a sinker that averages 92 mph with a spin of 2,300 rpm. His ground‑ball rate jumped from 38% to 46% after Dodgers’ pitching coach **Mike Mason** introduced a “sink‑first” pitch‑sequencing philosophy in early May. The shift produced 7.4 K/9 and a walk rate of 1.8 BB/9, driving his FIP down to 2.71 from a season‑start 3.89.
Reyes, a 22‑year‑old first‑round pick from the 2022 draft, made his MLB debut on April 2, 2026, and quickly established a four‑pitch arsenal: a 95‑mph fastball, a 78‑mph changeup, a 84‑mph cutter, and a 71‑mph curveball. His fastball spin rate sits at an elite 2,800 rpm, generating a vertical break of 9‑10 inches, which correlates with his 12.4 K/9 strikeout rate. Reyes’ success is also tied to the Rays’ defensive alignment, which yields a park‑adjusted DER of .720, the best in the American League.
Statistical deep‑dive: spin, ground balls, and park factors
The rankings’ methodology assigns 30% weight to spin‑rate changes, 25% to ERA+, 20% to FIP, 15% to park‑adjusted peripheral ratios (K/9, BB/9, HR/9) and 10% to durability (innings pitched). This weighting explains why Hough’s 150 rpm spin jump in June— the steepest month‑to‑month increase among qualified starters— propelled him past deGrom‑era veteran **Gerrit Cole** (now at No. 2) despite Cole’s still‑impressive 3.12 ERA.
Park adjustments played a pivotal role for pitchers in pitcher‑friendly venues such as Coors Field (Colorado Rockies) and Petco Park (San Diego Padres). **Kyle Wheeler**, a right‑hander for the Rockies, climbed from No. 15 to No. 11 after his FIP-adjusted ERA fell from 4.10 to 3.45, aided by a 0.68 ERA+ boost from the high‑altitude environment. Conversely, **Luis Cabrera** of the San Diego Padres slipped from No. 8 to No. 12 after his home‑run rate spiked to 1.2 HR/9, a metric heavily penalized in the park‑adjusted model.
Key Developments
- The Twins’ ace increased his spin rate by 150 rpm in June, the steepest month‑to‑month jump among qualified starters.
- Sonny Gray’s 5.90 ERA on May 24 marked the highest ERA among the top‑20 pitchers, prompting analysts to downgrade his ranking.
- A rookie right‑hander from the Arizona Diamondbacks logged a 1.72 ERA over his first 10 starts, the best ERA+ (180) for any newcomer this season.
- The Chicago Cubs’ veteran left‑hander saw his WAR fall to 1.4 after a shoulder strain, pushing him out of the top‑15 for the first time since 2022.
- Advanced metrics show the New York Yankees’ ace improved his ground‑ball rate from 42% to 49% after a mid‑May coaching change.
Rookie breakout stories
The Diamondbacks’ 23‑year‑old **Javier Mendoza** (right‑hander) emerged as the season’s most efficient newcomer. Over 10 starts he posted a 1.72 ERA, a 0.96 WHIP, and an ERA+ of 180, eclipsing the previous rookie record set by **Zack Goldberg** in 2021. Mendoza’s success is linked to his unique “two‑seam fastball” that sits at 93 mph with a spin of 2,550 rpm, generating a lateral movement that confounds right‑handed batters. His strikeout-to-walk ratio of 6.5 ranks third among all qualified starters.
In the National League, **Kade Sullivan** of the Milwaukee Brewers debuted with a 2.05 ERA and a 1.01 WHIP in his first eight outings. Sullivan’s high‑spin four‑seam fastball (2,650 rpm) combined with a late‑developing changeup (78 mph) has made him a go‑to option in high‑leverage situations, and his K/9 of 10.8 places him among the league’s elite swing‑and‑miss pitchers.
Veteran regressions and injury impacts
Sonny Gray, 31, entered the season as the presumed No. 2 starter after a 2025 campaign that featured a 3.24 ERA and 200 IP. However, a lingering forearm strain manifested in May, inflating his walk rate to 4.2 BB/9 and his HR/9 to 1.5. His FIP ballooned to 5.34, and analysts recalibrated his WAR to 0.9, removing him from the top‑20.
Similarly, the Chicago Cubs’ veteran left‑hander **Kris Bauer**, once a perennial All‑Star, saw his WAR dip to 1.4 after a Grade‑1 shoulder strain in early April. Bauer’s velocity dropped from an average 94 mph fastball to 90 mph, and his spin rate fell by 120 rpm, resulting in a 4.12 ERA and a WHIP of 1.38.
These regressions underscore the importance of health monitoring. Both the Twins and Dodgers have adopted wearable technology (Catapult GPS and Zephyr bio‑sensors) to track arm‑slot consistency and fatigue, allowing coaching staff to intervene before performance declines become entrenched.
Coaching strategies that reshaped the rankings
The New York Yankees made a mid‑May coaching change, replacing long‑time pitching coach **Rick Alvarez** with former reliever **Luis Gómez**. Gómez emphasized a “front‑side‑up” approach, encouraging pitchers to start counts low and attack the inside corner. As a result, Yankees ace **Gerrit Cole** increased his ground‑ball rate from 42% to 49% and reduced his fly‑ball HR/9 from 1.0 to 0.6, shrinking his FIP by 0.38 points.
The Dodgers, meanwhile, instituted a data‑driven “spin‑max” protocol, where pitchers receive real‑time spin‑rate feedback via high‑speed cameras at the bullpen. Gavin Stone’s spin increase of 180 rpm in May directly correlates with his WHIP improvement from 1.08 to 0.92, a case study now being rolled out league‑wide.
Impact and what’s next for fantasy owners
Fantasy baseball managers should target the Twins’ ace and the Dodgers’ left‑hander in weekly lineups, as their underlying peripherals suggest sustained success. Hough’s K/9 of 11.2, combined with a walk rate under 2.0, translates to a projected 5.1 fantasy points per start under standard rotisserie scoring. Stone’s WHIP of 0.92 and ground‑ball tendency make him a reliable source of innings and low‑ratio categories.
Conversely, owners may want to bench Sonny Gray until his ERA stabilizes, given his recent regression. Gray’s projected fantasy output has fallen to 2.7 points per start, well below league average for a top‑5 starter. The rankings also hint that teams with deep rotation depth, like the Rays and Diamondbacks, could become playoff spoilers if their young arms continue to excel. Both Mendoza and Reyes are projected to finish the season with sub‑3.00 ERAs and high K/9 rates, making them high‑upside waiver wire pickups for owners looking to capitalize on emerging talent.
Finally, the rankings signal a broader trend: spin‑rate optimization and defensive alignment are becoming decisive factors in pitcher evaluation. Fantasy platforms that incorporate advanced metrics (e.g., spin‑adjusted K% or park‑adjusted ERA+) will likely reward early adopters who adjust their draft boards to reflect these new performance drivers.
How are the 2026 MLB Pitcher Rankings calculated?
The rankings use a weighted formula that blends ERA+, FIP, spin rate, strikeout-to-walk ratio and park adjustments. Baseball‑Reference updates the model weekly, incorporating the latest game logs.
Which pitcher had the biggest improvement month‑to‑month?
The Twins’ ace posted the largest month‑to‑month spin‑rate increase, adding 150 rpm in June, which helped lift his ERA+ to 162.
Are there any rookie pitchers in the top 20?
Yes, a rookie right‑hander from Arizona posted a 1.72 ERA and a 180 ERA+, earning a No. 9 spot among all starters.
What does a high spin rate indicate for a pitcher?
A higher spin rate often correlates with increased movement on fastballs, leading to more swings and misses. The Twins’ ace saw his strikeout rate rise to 11.2 K/9 after his spin rate jumped.
