Best April relievers by K-BB% and other filters
May 3 2026
April is over and May is here. The first month, there were six relievers with a K%-BB% at or above a whopping 30%, with an xERA under 4.00 and HR/9 at or under 1.0. And of those six, two are already on the IL: Philadelphia Phillies closer Jhoan Duran (RHP, PHI) with an oblique and Atlanta Braves closer Raisel Iglesias (RHP, ATL) with a shoulder. Here are the April numbers:
| SV | HD | IP | xERA | WHIP | K% | K-BB% | HR/9 | ||
|---|---|---|---|---|---|---|---|---|---|
| Miller, Mason | SD | 10 | 0 | 15.1 | 1.07 | 0.59 | 54% | 48% | 0.0 |
| Varland, Louis | TOR | 4 | 3 | 16.0 | 1.69 | 1.00 | 43% | 37% | 0.0 |
| Duran, Jhoan IL | PHI | 5 | 0 | 6.2 | 1.83 | 0.75 | 33% | 33% | 0.0 |
| Iglesias, Raisel IL | ATL | 5 | 0 | 8.2 | 2.78 | 0.69 | 36% | 32% | 0.0 |
| Montgomery, Mason LHP | PIT | 0 | 4 | 12.1 | 2.80 | 1.38 | 41% | 30% | 0.7 |
| Sabrowski, Erik LHP | CLE | 0 | 12 | 13.2 | 3.26 | 0.95 | 41% | 30% | 0.7 |
San Diego Padres closer Mason Miller (RHP, SD) finally gave up a run. His K% is 54%....
Almost!
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