46 players are tied for the lowest ERA + walk allowed in a season, with 0. The first three are Willi Castro, Garrett Hampson and Weston Wilson this season and in 2024.
Interpreted as:
fewest era + bb by a player in season with 100 pitches| NAME | ERA+BB | ERA | BB | SEASON | TM | G | W | L | W% | GS | SO | CG | SHO | SV | IP | H | ER | R | HR | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | ERA- | FIP | FIP- | H/9 | PRAA | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | W. Castro | 0 | 0.00 | 0 | 2025 | TOT | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .250 | 0.00 | 0 | 3.13 | 75 | 9.00 | 0.1 | ||
| 2 | | J. DÃaz | 0 | 0.00 | 0 | 2025 |  SEA | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1.1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 5 | 0 | 6.75 | 0.00 | 0.00 | 20.0 | 0.0 | 0.75 | .250 | 0.00 | 0 | 1.63 | 41 | 6.75 | 0.4 | ||
| 3 | | G. Hampson | 0 | 0.00 | 0 | 2025 | TOT | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.13 | 77 | 0.00 | 0.1 | ||
| 4 | | I. Kiner-Falefa | 0 | 0.00 | 0 | 2025 | TOT | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.13 | 75 | 0.00 | 0.1 | ||
| 5 | | T. Nido | 0 | 0.00 | 0 | 2025 |  DET | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.2 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 6 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 4.93 | 119 | 0.00 | -0.2 | ||
| 6 | | A. Slater | 0 | 0.00 | 0 | 2025 | TOT | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.2 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.50 | .333 | 0.00 | 0 | 3.13 | 73 | 13.50 | 0.1 | ||
| 7 | | Z. McKinstry | 0 | 0.00 | 0 | 2025 | DET | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.13 | 76 | 0.00 | 0 | ||
| 8 | | J. Espada | 0 | 0.00 | 0 | 2025 |  BAL | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 3.0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 9 | 0 | 12.00 | 0.00 | 0.00 | 44.4 | 0.0 | 0.33 | .200 | 0.00 | 0 | 0.46 | 11 | 3.00 | 1.2 | ||
| 9 | | W. Wilson | 0 | 0.00 | 0 | 2025 |  PHI | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.0 | 3 | 0 | 0 | 0 | 0 | 2 | 0 | 12 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .250 | 0.00 | 0 | 3.13 | 74 | 9.00 | 0.4 | ||
| 10 | | L. Davidson | 0 | 0.00 | 0 | 2025 | TOT | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 9.00 | 0.00 | 0.00 | 33.3 | 0.0 | 0.00 | .000 | 0.00 | 0 | 1.13 | 26 | 0.00 | 0.3 | ||
| 11 | | J. Amaya | 0 | 0.00 | 0 | 2025 |  CWS | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.13 | 73 | 0.00 | 0.1 | ||
| 12 | | A. Trejo | 0 | 0.00 | 0 | 2025 |  COL | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .333 | 0.00 | 0 | 3.13 | 72 | 9.00 | 0.1 | ||
| 13 | | A. Seigler | 0 | 0.00 | 0 | 2025 |  MIL | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .250 | 0.00 | 0 | 3.13 | 75 | 9.00 | 0.1 | ||
| 14 | | C. Salazar | 0 | 0.00 | 0 | 2025 |  HOU | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 4 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 6.13 | 148 | 0.00 | -0.2 | ||
| 15 | | W. MacIver | 0 | 0.00 | 0 | 2025 |  ATH | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.0 | 4 | 0 | 0 | 0 | 0 | 2 | 0 | 10 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 2.00 | .400 | 0.00 | 0 | 3.13 | 75 | 18.00 | 0.2 | ||
| 16 | | C. Koss | 0 | 0.00 | 0 | 2025 |  SFG | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4.0 | 4 | 0 | 0 | 0 | 0 | 4 | 0 | 16 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .250 | 0.00 | 0 | 3.13 | 79 | 9.00 | 0.4 | ||
| 17 | | H. Barco | 0 | 0.00 | 0 | 2025 |  PIT | 2 | 1 | 0 | 1.000 | 0 | 3 | 0 | 0 | 0 | 3.0 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 12 | 0 | 9.00 | 0.00 | 0.00 | 25.0 | 0.0 | 1.00 | .333 | 0.00 | 0 | 1.13 | 27 | 9.00 | 1 | |
| 18 | | A. Burleson | 0 | 0.00 | 0 | 2025 |  STL | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 4 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .333 | 0.00 | 0 | 6.13 | 151 | 9.00 | -0.2 | ||
| 19 | | E. Duran | 0 | 0.00 | 0 | 2025 |  TEX | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3.1 | 1 | 0 | 0 | 0 | 0 | 4 | 0 | 11 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.30 | .091 | 0.00 | 0 | 3.13 | 74 | 2.70 | 0.4 | ||
| 20 | | M. Stefanic | 0 | 0.00 | 0 | 2025 |  TOR | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.13 | 75 | 0.00 | 0.1 | ||
| 21 | | N. Eaton | 0 | 0.00 | 0 | 2025 |  BOS | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | 4 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 2.00 | .500 | 0.00 | 0 | 3.13 | 74 | 18.00 | 0.1 | ||
| 22 | | R. Fitzgerald | 0 | 0.00 | 0 | 2025 |  MIN | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2.0 | 2 | 0 | 0 | 0 | 0 | 2 | 0 | 8 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .250 | 0.00 | 0 | 3.13 | 75 | 9.00 | 0.2 | ||
| 23 | | D. Hamel | 0 | 0.00 | 0 | 2025 |  NYM | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.0 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 6 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 3.00 | .600 | 0.00 | 0 | 6.13 | 150 | 27.00 | -0.2 | ||
| 24 | | E. Alvarez | 0 | 0.00 | 0 | 2024 | NYM | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 5 | 0 | 9.00 | 0.00 | 0.00 | 20.0 | 0.0 | 1.00 | .333 | 0.00 | 0 | 4.16 | 104 | 9.00 | 0 | ||
| 25 | | W. Castro | 0 | 0.00 | 0 | 2024 | MIN | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.1 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 4 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.16 | 77 | 0.00 | 0.1 | ||
Cubs 
Dodgers 
Padres 
Yankees 
Guardians 
ATL 
WSH 
