In 2026, the two best Cuban relievers in the big leagues play in different leagues, fill different roles, and are putting up numbers that tell two very different stories. Aroldis Chapman carries a 1.94 ERA and 27 saves with the Boston Red Sox. Adrián Morejón has racked up 83 strikeouts in 68 innings for the San Diego Padres. Neither is having a bad season. The catch is that only one can be the best Cuban arm in the bullpen today — and that’s exactly what we’re here to settle, with real numbers.
The Verdict: Chapman Wins Today, Morejón Owns the Future
Through August 20, 2026, Aroldis Chapman is the best active Cuban player in the majors. A 1.94 ERA across 41.2 innings, 27 saves, and an xERA of 2.85 per Statcast — meaning even after adjusting for contact quality allowed, he’s still operating as an elite reliever. He’s not just closing games; he’s closing them clean.
| Category | Aroldis Chapman | Adrián Morejón |
|---|---|---|
| Team | Red Sox | Padres |
| Country | Cuba | Cuba |
| ERA | 1.94 | 2.78 |
| K | 53 | 83 |
| IP | 41.2 | 68.0 |
MLB Stats API data through August 20, 2026.
Morejón isn’t far behind. His 83 strikeouts in 68 innings are the strongest argument for his case — more than a strikeout per inning is the standard of a dominant reliever, and Morejón clears that bar comfortably. But his 2 saves reflect a different role: San Diego deploys him as a high-leverage weapon, not necessarily as the closer. Context matters, and here it tilts toward Chapman.
More Strikeouts vs. Better ERA: Where the Debate Lives
Morejón has 83 punchouts to Chapman’s 53 — but he’s also thrown 68 innings to Chapman’s 41.2. Adjust for volume, and Chapman is striking out 30.3% of the batters he faces. Morejón, carrying the heavier workload, runs a similar rate. Both are swing-and-miss pitchers.
Where they separate is in run prevention. Chapman’s 1.94 ERA is hard to argue with. Per Statcast, hitters are batting .201 against him and his xwOBA allowed sits at .263 — both in the 92nd percentile league-wide. That’s not luck; that’s dominance. Morejón’s 2.78 ERA is still very good, but Chapman is operating at a different level of control this season.
What’s at Stake for Each Pitcher
Chapman is 36 and writing one of the best chapters of a career that already has plenty of them: fastest pitcher in modern history, closer on two World Series winners, and now — after years of contract-to-contract uncertainty — the closer the Red Sox actually needed. His 27 saves through August 20 put him among the American League leaders in that category.
Morejón is 25 and has something Chapman no longer does: time. His 83 strikeouts in a season where his role has expanded suggest San Diego is building around him as a core bullpen piece — not a placeholder. If the trajectory holds, the Chapman vs. Morejón conversation in two or three years could land very differently. For now, though, the veteran has the edge.
Both left Cuba. Both reached the majors by different routes. And both are proving that Cuban baseball keeps producing relievers who don’t take a back seat to anyone.
Chapman’s Numbers, By the Details
- 43 appearances, 41.2 innings in 2026
- ERA: 1.94 · WHIP: 1.20
- 53 strikeouts, 19 walks — 30.3% strikeout rate
- 27 saves
- xERA: 2.85 (expected ERA based on contact quality allowed)
- Average fastball: 97.4 mph with 2,441 rpm spin rate
- Whiff rate: 28.5% of swings against him miss entirely
- Batting average against: .201
- Exit velocity allowed: 88.3 mph
- Barrel rate allowed: 7.8%
How Chapman Ranks League-Wide (Statcast Percentiles, August 20, 2026)
- xERA: 92nd percentile (elite)
- Strikeout rate (K%): 92nd percentile (elite)
- Whiff %: 75th percentile
- Fastball velocity: 90th percentile (elite)
- Fastball spin: 87th percentile
- xwOBA against: 92nd percentile (elite)
All Chapman data via Baseball Savant through August 20, 2026. The Cuban closer in Boston is leaving a mark on Statcast’s radar — and the numbers, not the opinions, are what validate greatness.
So who do you have? Chapman with the ERA and the saves, or Morejón with the strikeouts and the years ahead? There’s a real argument on both sides — and that’s exactly what makes this worth debating. Drop your verdict in the comments.
