which batter has the highest career strikeouts per 9 in a single playoff game

Adam Ottavino has the highest K/9 in a postseason game, with 54.00 per nine innings in Game 2 of the 2019 ALCS against the Astros.

NAMEK/9DATETMOPPDECGSERASOCGSHOSVIPHERRHRBBHBPGFIBBTBFWP
1Adam Ottavino
A. Ottavino
54.00
10/13/2019
@
0
27.00
2
0
0
0
0.1
2
1
1
1
0
0
0
0
4
1
2Seranthony Domínguez
S. Domínguez
27.00
10/31/2025
vs
0
0.00
1
0
0
0
0.1
0
0
0
0
1
0
0
0
2
0
3Jeff Hoffman
J. Hoffman
27.00
10/20/2025
vs
0
0.00
3
0
0
1
1.0
0
0
0
0
0
0
1
0
3
0
4Blake Treinen
B. Treinen
27.00
10/17/2025
vs
0
27.00
1
0
0
0
0.1
1
1
1
0
1
0
0
0
3
0
5Aaron Ashby
A. Ashby
27.00
10/16/2025
@
1
27.00
1
0
0
0
0.1
2
1
1
0
1
0
0
0
4
0
6Robert Gasser
R. Gasser
27.00
10/14/2025
vs
0
0.00
2
0
0
0
0.2
1
0
0
0
1
1
0
1
5
0
7Braydon Fisher
B. Fisher
27.00
10/13/2025
vs
0
18.00
3
0
0
0
1.0
2
2
2
1
0
0
0
0
5
0
8Louis Varland
L. Varland
27.00
10/13/2025
vs
0
9.00
3
0
0
0
1.0
1
1
1
1
0
0
0
0
4
0
9Blake Treinen
B. Treinen
27.00
10/13/2025
@
0
0.00
1
0
0
1
0.1
0
0
0
0
1
0
1
0
2
0
10Seranthony Domínguez
S. Domínguez
27.00
10/12/2025
vs
0
27.00
1
0
0
0
0.1
1
1
1
0
2
0
0
0
4
0
11Brendon Little
B. Little
27.00
10/12/2025
vs
0
0.00
1
0
0
0
0.1
1
0
0
0
0
0
0
0
2
1
12Mason Fluharty
M. Fluharty
27.00
10/12/2025
vs
0
0.00
2
0
0
0
0.2
0
0
0
0
0
0
0
0
2
0
13Aaron Ashby
A. Ashby
27.00
10/11/2025
vs
0
0.00
1
0
0
0
0.1
1
0
0
0
0
1
0
0
3
0
14Trevor Megill
T. Megill
27.00
10/9/2025
@
0
0.00
1
0
0
0
0.1
1
0
0
0
1
0
0
0
3
0
15Nick Mears
N. Mears
27.00
10/8/2025
@
0
0.00
1
0
0
0
0.1
0
0
0
0
1
0
0
0
2
1
16Mason Fluharty
M. Fluharty
27.00
10/8/2025
@
0
9.00
3
0
0
0
1.0
1
1
1
1
0
0
0
0
4
0
17Abner Uribe
A. Uribe
27.00
10/6/2025
vs
0
0.00
3
0
0
0
1.0
0
0
0
0
0
0
1
0
3
0
18Matt Brash
M. Brash
27.00
10/5/2025
vs
W
0
9.00
3
0
0
0
1.0
1
1
2
0
1
0
0
0
6
0
19Eric Lauer
E. Lauer
27.00
10/5/2025
vs
0
81.00
1
0
0
0
0.1
3
3
3
0
0
0
0
0
4
0
20Braydon Fisher
B. Fisher
27.00
10/5/2025
vs
0
0.00
1
0
0
0
0.1
1
0
0
0
0
0
0
0
2
0
21Matt Brash
M. Brash
27.00
10/4/2025
vs
0
0.00
2
0
0
0
0.2
0
0
0
0
1
0
0
0
3
0
22Caleb Thielbar
C. Thielbar
27.00
10/2/2025
vs
0
0.00
2
0
0
0
0.2
1
0
0
0
0
0
0
0
3
0
23Michael King
M. King
27.00
10/2/2025
@
0
0.00
3
0
0
0
1.0
1
0
0
0
0
0
0
0
4
0
24Aroldis Chapman
A. Chapman
27.00
10/2/2025
@
0
0.00
3
0
0
0
1.0
1
0
0
0
0
0
1
0
4
0
25Mason Miller
M. Miller
27.00
10/1/2025
@
0
0.00
5
0
0
0
1.2
0
0
0
0
0
1
0
0
6
0
Results may be incomplete. StatMuse has complete game-level data for K/9 going back to the 1903 playoffs.
Some of the information used here was obtained free of charge from Retrosheet.

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