Jackson Kowar - Mariners
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SEA
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MLB
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wOBA
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ISO
—
wRC+
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Prior Season Stats
(2026 season data will appear once games are played)
vs LHB Pitching performance splits against left-handed and right-handed batters.
K%
20.9%
K/9
7.59
BB%
7.0%
wOBA
0.321
xFIP
5.23
HH%
50.0%
vs RHB Pitching performance splits against left-handed and right-handed batters.
K%
21.4%
K/9
8.53
BB%
14.3%
wOBA
0.411
xFIP
5.23
HH%
50.0%
Overall Pitching performance splits against left-handed and right-handed batters.
K%
21.1%
K/9
7.94
BB%
9.9%
wOBA
0.357
xFIP
5.23
HH%
50.0%
Season Context Key season-level pitching metrics including games played, SIERA, and batted ball data.
GP
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SIERA
4.83
P/IP
16.53
TBF
71
HH%
50.0%
Barrel%
10.4%
CSW%
—
CSW Prev
29.1%
GB%
29.4%
FB%
70.6%
Bullpen
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RSB
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Traditional Stats Standard pitching stats: ERA, FIP, W/L, saves, holds, innings, and games started.
ERA
4.24
FIP
5.84
W
2
L
0
SV
0
HLD
1
IP
17.0
GS
0
WAR
-0.2
ERA-
111
Statcast & Expected Baseball Savant data: exit velocity, launch angle, expected stats based on quality of contact.
Avg EV
91.8
Max EV
110.9
Brl/PA
7.0
LA
24.7
SwSp%
22.9%
xBA
0.237
xSLG
0.486
xwOBA
0.348
Jackson Kowar MLB Stats
Jackson Kowar is a player for the Mariners. View Jackson's current season stats, recent performance trends, and key statistical categories to evaluate fantasy value and make informed DFS lineup decisions.