50 players are tied for the fewest career run allowed per inning pitched, with 0. The first three are Willie MacIver, Jack Perkins and Christian Koss.
| NAME | R/IP | R | IP | G | W | L | W% | GS | ERA | SO | CG | SHO | SV | H | ER | HR | BB | 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. MacIver | 0 | 0 | 2.0 | 2 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 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 | 3.08 | 75 | 18.00 | 0.2 | ||
| 2 | | J. Perkins | 0 | 0 | 6.1 | 2 | 0 | 0 | 0 | 0.00 | 5 | 0 | 0 | 1 | 2 | 0 | 0 | 2 | 0 | 2 | 0 | 22 | 2 | 7.11 | 2.84 | 2.50 | 0.00 | 22.7 | 9.1 | 0.63 | .133 | 0.00 | 0 | 2.45 | 60 | 2.84 | 1.2 | |
| 3 | | C. Koss | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 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 | 3.08 | 80 | 9.00 | 0.1 | ||
| 4 | | A. Lara | 0 | 0 | 3.0 | 1 | 0 | 0 | 0 | 0.00 | 4 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 10 | 0 | 12.00 | 0.00 | 0.00 | 40.0 | 0.0 | 0.33 | .167 | 0.00 | 0 | 0.42 | 10 | 3.00 | 1.2 | ||
| 5 | | C. Montes De Oca | 0 | 0 | 2.2 | 1 | 0 | 0 | 0 | 0.00 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 9 | 0 | 6.75 | 3.38 | 2.00 | 0.00 | 22.2 | 11.1 | 0.38 | .000 | 0.00 | 0 | 2.71 | 69 | 0.00 | 0.4 | |
| 6 | | Y. Hiraldo | 0 | 0 | 1.1 | 1 | 0 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 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 | 1.58 | 39 | 6.75 | 0.4 | ||
| 7 | | B. Rodriguez | 0 | 0 | 1.2 | 1 | 0 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 6 | 0 | 5.40 | 5.40 | 1.00 | 0.00 | 16.7 | 16.7 | 0.60 | .000 | 0.00 | 0 | 5.48 | 137 | 0.00 | -0.3 | |
| 8 | | E. Nunez | 0 | 0 | 0.1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 4 | 0 | 0.00 | 54.00 | 0.00 | 0.00 | 0.0 | 50.0 | 9.00 | .500 | 0.00 | 0 | 21.08 | 529 | 27.00 | -0.6 | |
| 9 | | L. Vázquez | 0 | 0 | 3.1 | 3 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 1 | 0 | 3 | 0 | 11 | 0 | 0.00 | 2.70 | 0.00 | 0.00 | 0.0 | 9.1 | 1.20 | .300 | 0.00 | 0 | 3.98 | 99 | 8.10 | 0 | |
| 10 | | A. Kloffenstein | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.16 | 79 | 0.00 | 0.1 | ||
| 11 | | E. Kravetz | 0 | 0 | 0.2 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.16 | 73 | 0.00 | 0.1 | ||
| 12 | | T. McDonald | 0 | 0 | 3.0 | 1 | 0 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 10 | 0 | 3.00 | 3.00 | 1.00 | 0.00 | 10.0 | 10.0 | 0.33 | .000 | 0.00 | 0 | 3.49 | 90 | 0.00 | 0.1 | |
| 13 | | J. Meeker | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 4 | 0 | 0.00 | 9.00 | 0.00 | 0.00 | 0.0 | 25.0 | 2.00 | .333 | 0.00 | 0 | 6.16 | 150 | 9.00 | -0.2 | |
| 14 | | J. Espada | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 1 | 0 | 5 | 0 | 18.00 | 18.00 | 1.00 | 0.00 | 40.0 | 40.0 | 2.00 | .000 | 0.00 | 0 | 5.25 | 121 | 0.00 | -0.1 | |
| 15 | | W. Wilson | 0 | 0 | 4.0 | 3 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 3 | 0 | 16 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 1.00 | .250 | 0.00 | 0 | 3.10 | 75 | 9.00 | 0.4 | ||
| 16 | | G. Kessinger | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 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 | 3.16 | 78 | 0.00 | 0.1 | ||
| 17 | | B. Calvo | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 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 | 3.25 | 71 | 0.00 | 0.1 | ||
| 18 | | H. Danner | 0 | 0 | 0.1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0.00 | 0.00 | 0.00 | 0.0 | 0.0 | 0.00 | .000 | 0.00 | 0 | 3.25 | 76 | 0.00 | 0 | ||
| 19 | | J. Amaya | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 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 | 3.08 | 73 | 0.00 | 0.1 | ||
| 20 | | R. Karcher | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 4 | 0 | 0.00 | 9.00 | 0.00 | 0.00 | 0.0 | 25.0 | 1.00 | .000 | 0.00 | 0 | 6.25 | 135 | 0.00 | -0.2 | |
| 21 | | C. Vallimont | 0 | 0 | 0.2 | 1 | 0 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 2 | 0 | 13.50 | 0.00 | 0.00 | 50.0 | 0.0 | 1.50 | 1.000 | 0.00 | 0 | 0.25 | 6 | 13.50 | 0.3 | ||
| 22 | | C. Salazar | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 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 | 6.08 | 150 | 0.00 | -0.2 | ||
| 23 | | N. Loftin | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 0 | 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 | 3.16 | 77 | 9.00 | 0.1 | ||
| 24 | | J. Lester | 0 | 0 | 1.0 | 1 | 0 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 5 | 0 | 9.00 | 9.00 | 1.00 | 0.00 | 20.0 | 20.0 | 2.00 | .333 | 0.00 | 0 | 4.25 | 101 | 9.00 | 0 | |
| 25 | | J. Palacios | 0 | 0 | 0.2 | 2 | 0 | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 2 | 0 | 3 | 0 | 13.50 | 0.00 | 0.00 | 33.3 | 0.0 | 1.50 | .500 | 0.00 | 0 | 0.11 | 3 | 13.50 | 0.3 | ||
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