Since 1913, Zack Britton has the lowest ERA with 50.0+ innings pitched in a season, with an ERA of 0.54 in 2016.
| NAME | ERA | IP | SEASON | TM | G | W | L | W% | GS | SO | CG | SHO | SV | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | K/9 | BB/9 | K/BB | HR/9 | K% | BB% | WHIP | BABIP | RA | H/9 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | Z. Britton | 0.54 | 67.0 | 2016 | 69 | 2 | 1 | .667 | 0 | 74 | 0 | 0 | 47 | 38 | 4 | 7 | 1 | 18 | 0 | 63 | 3 | 254 | 10 | 9.94 | 2.42 | 4.11 | 0.13 | 29.1 | 7.1 | 0.84 | .230 | 0.94 | 5.10 | |
| 2 | | F. Rodney | 0.60 | 74.2 | 2012 | 76 | 2 | 2 | .500 | 0 | 76 | 0 | 0 | 48 | 43 | 5 | 9 | 2 | 15 | 3 | 65 | 1 | 282 | 4 | 9.16 | 1.81 | 5.07 | 0.24 | 27.0 | 5.3 | 0.78 | .220 | 1.08 | 5.18 | |
| 3 |  | E. Clase | 0.61 | 74.1 | 2024 | 74 | 4 | 2 | .667 | 0 | 66 | 0 | 0 | 47 | 39 | 5 | 10 | 2 | 10 | 2 | 66 | 1 | 270 | 2 | 7.99 | 1.21 | 6.60 | 0.24 | 24.4 | 3.7 | 0.66 | .195 | 1.21 | 4.72 | |
| 4 | | D. Eckersley | 0.61 | 73.1 | 1990 | 63 | 4 | 2 | .667 | 0 | 73 | 0 | 0 | 48 | 41 | 5 | 9 | 2 | 4 | 0 | 61 | 1 | 262 | 0 | 8.96 | 0.49 | 18.25 | 0.25 | 27.9 | 1.5 | 0.61 | .213 | 1.10 | 5.03 | |
| 5 | | R. Murphy | 0.72 | 50.1 | 1986 | 34 | 6 | 0 | 1.000 | 0 | 36 | 0 | 0 | 1 | 26 | 4 | 4 | 0 | 21 | 0 | 12 | 2 | 195 | 5 | 6.44 | 3.75 | 1.71 | 0.00 | 18.5 | 10.8 | 0.93 | .188 | 0.72 | 4.65 | |
| 6 |  | B. Treinen | 0.78 | 80.1 | 2018 | 68 | 9 | 2 | .818 | 0 | 100 | 0 | 0 | 38 | 46 | 7 | 12 | 2 | 21 | 1 | 58 | 3 | 315 | 6 | 11.20 | 2.35 | 4.76 | 0.22 | 31.7 | 6.7 | 0.83 | .230 | 1.34 | 5.15 | |
| 7 |  | S. Ohtani | 0.82 | 55.0 | 2026 | 9 | 5 | 2 | .714 | 9 | 61 | 0 | 0 | 0 | 28 | 5 | 7 | 2 | 17 | 4 | 0 | 0 | 213 | 0 | 9.98 | 2.78 | 3.59 | 0.33 | 28.6 | 8.0 | 0.82 | .202 | 1.15 | 4.58 | |
| 8 | | E. Hamilton | 0.83 | 54.0 | 1918 | 6 | 6 | 0 | 1.000 | 6 | 20 | 6 | 1 | 0 | 47 | 5 | 7 | 0 | 13 | 0 | 0 | 210 | 1 | 3.33 | 2.17 | 1.54 | 0.00 | 9.5 | 6.2 | 1.11 | .266 | 1.17 | 7.83 | ||
| 9 | | B. Henry | 0.87 | 52.0 | 1964 | 37 | 2 | 2 | .500 | 0 | 29 | 0 | 0 | 6 | 31 | 5 | 9 | 2 | 12 | 3 | 20 | 4 | 202 | 1 | 5.02 | 2.08 | 2.42 | 0.35 | 14.4 | 5.9 | 0.83 | .186 | 1.56 | 5.37 | |
| 10 | | D. Reyes | 0.89 | 50.2 | 2006 | 66 | 5 | 0 | 1.000 | 0 | 49 | 0 | 0 | 0 | 35 | 5 | 8 | 3 | 15 | 0 | 8 | 2 | 194 | 4 | 8.70 | 2.66 | 3.27 | 0.53 | 25.3 | 7.7 | 0.99 | .252 | 1.42 | 6.22 | |
| 11 | | F. Schupp | 0.90 | 140.1 | 1916 | 30 | 9 | 3 | .750 | 11 | 86 | 8 | 4 | 0 | 79 | 14 | 22 | 1 | 37 | 5 | 17 | 525 | 2 | 5.52 | 2.37 | 2.32 | 0.06 | 16.4 | 7.0 | 0.83 | .197 | 1.41 | 5.07 | ||
| 12 | | J. Papelbon | 0.92 | 68.1 | 2006 | 59 | 4 | 2 | .667 | 0 | 75 | 0 | 0 | 35 | 40 | 7 | 8 | 3 | 13 | 1 | 49 | 2 | 257 | 2 | 9.88 | 1.71 | 5.77 | 0.40 | 29.2 | 5.1 | 0.78 | .224 | 1.05 | 5.27 | |
| 13 | | B. Veale | 0.93 | 77.2 | 1963 | 34 | 5 | 2 | .714 | 7 | 68 | 3 | 2 | 3 | 59 | 8 | 15 | 1 | 40 | 1 | 10 | 2 | 321 | 5 | 7.88 | 4.64 | 1.70 | 0.12 | 21.2 | 12.5 | 1.27 | .275 | 1.74 | 6.84 | |
| 14 |  | W. Davis | 0.94 | 67.1 | 2015 | 69 | 8 | 1 | .889 | 0 | 78 | 0 | 0 | 17 | 33 | 7 | 8 | 3 | 20 | 0 | 24 | 1 | 251 | 1 | 10.43 | 2.67 | 3.90 | 0.40 | 31.1 | 8.0 | 0.79 | .200 | 1.07 | 4.41 | |
| 15 | | C. Hammond | 0.95 | 76.0 | 2002 | 63 | 7 | 2 | .778 | 0 | 63 | 0 | 0 | 0 | 53 | 8 | 15 | 1 | 31 | 1 | 6 | 9 | 311 | 1 | 7.46 | 3.67 | 2.03 | 0.12 | 20.3 | 10.0 | 1.11 | .242 | 1.78 | 6.28 | |
| 16 | | A. Loup | 0.95 | 56.2 | 2021 | 65 | 6 | 0 | 1.000 | 2 | 57 | 0 | 0 | 0 | 37 | 6 | 9 | 1 | 16 | 4 | 6 | 0 | 218 | 0 | 9.05 | 2.54 | 3.56 | 0.16 | 26.1 | 7.3 | 0.94 | .257 | 1.43 | 5.88 | |
| 17 | | D. Leonard | 0.96 | 224.2 | 1914 | 36 | 19 | 5 | .792 | 25 | 176 | 17 | 7 | 3 | 140 | 24 | 35 | 3 | 58 | 10 | 9 | 871 | 2 | 7.05 | 2.32 | 3.03 | 0.12 | 20.2 | 6.7 | 0.88 | .220 | 1.40 | 5.61 | ||
| 18 | | E. O'Flaherty | 0.98 | 73.2 | 2011 | 78 | 2 | 4 | .333 | 0 | 67 | 0 | 0 | 0 | 59 | 8 | 9 | 2 | 21 | 3 | 5 | 8 | 301 | 1 | 8.19 | 2.57 | 3.19 | 0.24 | 22.3 | 7.0 | 1.09 | .274 | 1.10 | 7.21 | |
| 19 | | W. Davis | 1.00 | 72.0 | 2014 | 71 | 9 | 2 | .818 | 0 | 109 | 0 | 0 | 3 | 38 | 8 | 8 | 0 | 23 | 3 | 11 | 0 | 279 | 1 | 13.63 | 2.88 | 4.74 | 0.00 | 39.1 | 8.2 | 0.85 | .264 | 1.00 | 4.75 | |
| 20 |  | C. Kimbrel | 1.01 | 62.2 | 2012 | 63 | 3 | 1 | .750 | 0 | 116 | 0 | 0 | 42 | 27 | 7 | 7 | 3 | 14 | 2 | 56 | 0 | 231 | 5 | 16.66 | 2.01 | 8.29 | 0.43 | 50.2 | 6.1 | 0.65 | .250 | 1.01 | 3.88 | |
| 21 | | D. Murray | 1.03 | 69.2 | 1974 | 32 | 1 | 1 | .500 | 0 | 31 | 0 | 0 | 10 | 46 | 8 | 12 | 1 | 23 | 0 | 23 | 2 | 271 | 1 | 4.00 | 2.97 | 1.35 | 0.13 | 11.4 | 8.5 | 0.99 | .208 | 1.55 | 5.94 | |
| 22 | | R. Fingers | 1.04 | 78.0 | 1981 | 47 | 6 | 3 | .667 | 0 | 61 | 0 | 0 | 28 | 55 | 9 | 9 | 3 | 13 | 1 | 41 | 5 | 297 | 1 | 7.04 | 1.50 | 4.69 | 0.35 | 20.5 | 4.4 | 0.87 | .237 | 1.04 | 6.35 | |
| 23 | | C. Martin | 1.05 | 51.1 | 2023 | 55 | 4 | 1 | .800 | 0 | 46 | 0 | 0 | 3 | 45 | 6 | 6 | 2 | 8 | 0 | 12 | 3 | 199 | 1 | 8.06 | 1.40 | 5.75 | 0.35 | 23.1 | 4.0 | 1.03 | .301 | 1.05 | 7.89 | |
| 24 | | B. Ziegler | 1.06 | 59.2 | 2008 | 47 | 3 | 0 | 1.000 | 0 | 30 | 0 | 0 | 11 | 47 | 7 | 8 | 2 | 22 | 1 | 21 | 3 | 229 | 0 | 4.53 | 3.32 | 1.36 | 0.30 | 13.1 | 9.6 | 1.16 | .259 | 1.21 | 7.09 | |
| 25 | | C. Meredith | 1.07 | 50.2 | 2006 | 45 | 5 | 1 | .833 | 0 | 37 | 0 | 0 | 0 | 30 | 6 | 6 | 3 | 6 | 2 | 11 | 3 | 185 | 0 | 6.57 | 1.07 | 6.17 | 0.53 | 20.0 | 3.2 | 0.71 | .197 | 1.07 | 5.33 | |
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SDPStatMuse has game-level data for ERA and innings pitched going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
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| NL East | W | L | PCT | GB |
|---|---|---|---|---|
 Braves - y | 94 | 68 | .580 | |
 Phillies - w | 88 | 74 | .543 | 6.0 |
80 | 82 | .494 | 14.0 | |
77 | 85 | .475 | 17.0 | |
74 | 88 | .457 | 20.0 | |
| NL Central | W | L | PCT | GB |
 Brewers - y | 103 | 59 | .636 | |
 Cubs - w | 89 | 73 | .549 | 14.0 |
82 | 80 | .506 | 21.0 | |
77 | 85 | .475 | 26.0 | |
75 | 87 | .463 | 28.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 100 | 62 | .617 | |
 Padres - w | 91 | 71 | .562 | 9.0 |
86 | 76 | .531 | 14.0 | |
65 | 97 | .401 | 35.0 | |
58 | 104 | .358 | 42.0 |
Marlins
Nationals
Cardinals
Diamondbacks
Giants
Rockies| AL East | W | L | PCT | GB |
|---|---|---|---|---|
 Rays - y | 98 | 64 | .605 | |
 Yankees - w | 93 | 68 | .578 | 4.5 |
 Red Sox - w | 87 | 75 | .537 | 11.0 |
79 | 82 | .491 | 18.5 | |
79 | 83 | .488 | 19.0 | |
| AL Central | W | L | PCT | GB |
 Guardians - y | 85 | 77 | .525 | |
 White Sox - w | 84 | 78 | .519 | 1.0 |
77 | 85 | .475 | 8.0 | |
76 | 86 | .469 | 9.0 | |
69 | 93 | .426 | 16.0 | |
| AL West | W | L | PCT | GB |
 Astros - y | 81 | 81 | .500 | |
80 | 82 | .494 | 1.0 | |
76 | 86 | .469 | 5.0 | |
64 | 98 | .395 | 17.0 | |
62 | 100 | .383 | 19.0 |
Twins
Tigers
Rangers
Mariners
Angels