Jose Mesa and Fred Heimach are tied for the worst ERA by a relief pitcher in a game, with an ERA of 243.00.
Interpreted as:
relief pitcher with the highest era in a single regular-season game| NAME | ERA | DATE | TM | OPP | DEC | GS | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Mesa | 243.00 | 5/28/2000 | @ | L | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 9 | 9 | 1 | 2 | 0 | 0 | 0 | 10 | 0 | ||
| 2 | | F. Heimach | 243.00 | 7/17/1933 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 9 | 9 | 0 | 1 | 0 | 0 | 10 | 0 | ||||
| 3 | | O. Peraza | 216.00 | 8/27/2025 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 8 | 8 | 1 | 0 | 1 | 0 | 0 | 9 | 0 | |||
| 4 | | P. Espino | 216.00 | 7/18/2023 | @ | 0 | 1 | 0 | 0 | 0 | 0.1 | 7 | 8 | 8 | 0 | 2 | 0 | 0 | 0 | 10 | 0 | |||
| 5 | | C. Bolton | 216.00 | 5/29/2023 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 6 | 8 | 8 | 1 | 2 | 0 | 0 | 0 | 9 | 0 | |||
| 6 | | T. Williams | 216.00 | 6/4/2019 | vs | 0 | 1 | 0 | 0 | 0 | 0.1 | 6 | 8 | 8 | 0 | 2 | 0 | 0 | 1 | 9 | 0 | |||
| 7 | | P. Humber | 216.00 | 9/4/2012 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 8 | 8 | 1 | 2 | 0 | 0 | 0 | 10 | 0 | |||
| 8 | | J. Miller | 216.00 | 6/4/2007 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 8 | 8 | 2 | 2 | 0 | 0 | 1 | 10 | 0 | |||
| 9 | | J. Orosco | 216.00 | 4/19/1996 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 6 | 8 | 8 | 1 | 2 | 0 | 0 | 0 | 9 | 0 | |||
| 10 | | B. Smith | 216.00 | 5/16/1993 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 6 | 8 | 8 | 0 | 2 | 0 | 0 | 0 | 9 | 0 | |||
| 11 | | J. Perlman | 216.00 | 9/24/1985 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 6 | 8 | 8 | 2 | 2 | 0 | 0 | 1 | 9 | 0 | |||
| 12 | | B. Dailey | 216.00 | 6/9/1964 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 5 | 8 | 8 | 1 | 3 | 0 | 0 | 0 | 9 | 1 | |||
| 13 | | J. Simpson | 189.00 | 8/26/2025 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 5 | 7 | 7 | 1 | 2 | 0 | 0 | 0 | 8 | 0 | |||
| 14 | | J. Díaz | 189.00 | 9/15/2023 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 7 | 7 | 0 | 2 | 0 | 0 | 0 | 10 | 0 | |||
| 15 | | T. Rogers | 189.00 | 5/24/2022 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 7 | 7 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | |||
| 16 | | S. Watkins | 189.00 | 9/12/2021 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 7 | 7 | 7 | 2 | 1 | 0 | 0 | 0 | 8 | 0 | |||
| 17 | | M. Peacock | 189.00 | 5/1/2021 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 6 | 7 | 7 | 1 | 1 | 0 | 0 | 0 | 8 | 0 | |||
| 18 | | J. Yacabonis | 189.00 | 7/20/2019 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 8 | 7 | 7 | 1 | 1 | 0 | 0 | 0 | 10 | 2 | |||
| 19 | | G. Sparkman | 189.00 | 7/2/2017 | vs | 0 | 1 | 0 | 0 | 0 | 0.1 | 7 | 7 | 7 | 0 | 0 | 0 | 0 | 0 | 8 | 0 | |||
| 20 | | T. Gorzelanny | 189.00 | 7/3/2016 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 4 | 7 | 7 | 1 | 3 | 0 | 0 | 0 | 8 | 0 | |||
| 21 | | M. Acosta | 189.00 | 4/27/2012 | @ | L | 0 | 0 | 0 | 0 | 0 | 0.1 | 5 | 7 | 7 | 1 | 2 | 1 | 0 | 0 | 9 | 0 | ||
| 22 | | R. White | 189.00 | 5/25/2007 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 6 | 7 | 7 | 0 | 1 | 0 | 0 | 1 | 8 | 0 | |||
| 23 | | K. Jimenez | 189.00 | 5/18/2007 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 5 | 7 | 7 | 0 | 2 | 0 | 0 | 0 | 8 | 0 | |||
| 24 | | S. Rivera | 189.00 | 7/5/2006 | vs | 0 | 0 | 0 | 0 | 0 | 0.1 | 8 | 7 | 8 | 0 | 1 | 0 | 0 | 1 | 11 | 0 | |||
| 25 | | R. Bauer | 189.00 | 5/11/2004 | @ | 0 | 0 | 0 | 0 | 0 | 0.1 | 5 | 7 | 7 | 0 | 2 | 0 | 0 | 0 | 8 | 0 | |||
TBD
BKN
PIT
LAA
TEX
WSH
PIT
SFG
MIL
MIA
CWS
MIN
BAL
COL
MON
MIN
ATL
NYM
ARI
CLE
HOU
STL
FLA
BALResults may be incomplete. StatMuse has complete game-level data for ERA going back to the 1901 season.
Some of the information used here was obtained free of charge from Retrosheet.
More Mariners Stats
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HR
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RBI
125
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AVG
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Team Pitching Leaders 
W
15
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K
198
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ERA
2.94
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Team Rankings
HR
238
3rd
R
766
9th
SO
1,426
7th
ERA
3.87
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Athletics
MLB 2025 Batting Leaders
MLB 2025 Pitching Leaders
MLB Fantasy 2025
MLB 2025 Betting
MLB 2025 Standings
| NL East | W | L | PCT | GB |
|---|---|---|---|---|
 Phillies - y | 96 | 66 | .593 | |
83 | 79 | .512 | 13.0 | |
79 | 83 | .488 | 17.0 | |
76 | 86 | .469 | 20.0 | |
66 | 96 | .407 | 30.0 | |
| NL Central | W | L | PCT | GB |
 Brewers - y | 97 | 65 | .599 | |
 Cubs - w | 92 | 70 | .568 | 5.0 |
 Reds - w | 83 | 79 | .512 | 14.0 |
78 | 84 | .481 | 19.0 | |
71 | 91 | .438 | 26.0 | |
| NL West | W | L | PCT | GB |
 Dodgers - y | 93 | 69 | .574 | |
 Padres - w | 90 | 72 | .556 | 3.0 |
81 | 81 | .500 | 12.0 | |
80 | 82 | .494 | 13.0 | |
43 | 119 | .265 | 50.0 |
Diamondbacks| AL East | W | L | PCT | GB |
|---|---|---|---|---|
 Blue Jays - y | 94 | 68 | .580 | |
 Yankees - w | 94 | 68 | .580 | |
 Red Sox - w | 89 | 73 | .549 | 5.0 |
77 | 85 | .475 | 17.0 | |
75 | 87 | .463 | 19.0 | |
| AL Central | W | L | PCT | GB |
 Guardians - y | 88 | 74 | .543 | |
 Tigers - w | 87 | 75 | .537 | 1.0 |
82 | 80 | .506 | 6.0 | |
70 | 92 | .432 | 18.0 | |
60 | 102 | .370 | 28.0 | |
| AL West | W | L | PCT | GB |
 Mariners - y | 90 | 72 | .556 | |
87 | 75 | .537 | 3.0 | |
81 | 81 | .500 | 9.0 | |
76 | 86 | .469 | 14.0 | |
72 | 90 | .444 | 18.0 |
Rays
Royals
