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Relief Pitcher · Washington Nationals

Matt Krook

LHP · Throws Left · Age 31Reliever
ERA
10.80
FIP
–
IP
8.1
W-L
0-1
WHIP
2.28
K%
19.6
BB%
21.7
GB%
–
K/9
9.7
HR/9
2.2
Drafted by the San Francisco Giants in 2016 (round 4), he was claimed off waivers by the Washington Nationals from the Athletics in July 2026. He made his MLB debut on June 16, 2023.Facts: MLB StatsAPI (people · transactions)
No scheduled start today. The model projection and lineup matchup appear on start days.

Sinker

SI · lead pitch

42% of pitches · .372 xwOBA allowed · 22 BIP · where it goes, what it costs

Pitcher Locations
where he throws it · catcher’s view
0%1%0%0%1%1%0%2%1%8%1%7%14%14%12%4%2%5%7%1%6%3%5%1%2%
Rare 0% · Common 10% · Very common 20%+
xwOBA Allowed
damage done by zone · all batters
.689––––––.736.483––.195.303.178–.700–.438.000––.699.463––
Cold .200 · Avg .310 · Hot .500+
Expected Damage
locations × damage zones
.002––––––.017.005––.014.042.026–.030–.020.000––.024.021––
Low risk · Average · High-risk zone
Sinker (42% usage) has allowed .372 xwOBA over 22 balls in play — his most-used pitch.

Arsenal

usage × whiff, ranked

4 pitch types · 276-pitch sample · 2026/2025/2024 blend, weighted 4/3/1

Sinker SI
42% usage · 21% whiff · .372 xwOBA · 89.6 mph
Sweeper ST
41% usage · 31% whiff · .409 xwOBA · 82.1 mph
Cutter FC
11% usage · .410 xwOBA
Changeup CH
6% usage · .530 xwOBA
Whiff% Trend
last 8 outings · by pitch · min 5 swings per point
01020304050606/236/256/276/297/77/107/117/20
SinkerSweeperCutter
Hand Splits
K% + xwOBA allowed by batter side · 2026/2025/2024 blend, weighted 4/3/1
SplitK%xwOBASample
vs. LHB– – 23
vs. RHB15 .431 35
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Market lines

current pick’em lines by book · updates through the day

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DFS picks

today’s picks for this pitcher, probability-sorted · graded nightly

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