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Relief Pitcher · Washington Nationals

Matt Krook

LHP · Throws Left · Age 31Reliever
ERA
14.54
FIP
–
IP
4.1
W-L
0-0
WHIP
2.77
K%
23.1
BB%
19.2
GB%
–
K/9
12.5
HR/9
2.1
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

41% of pitches · .476 xwOBA allowed · 14 BIP · where it goes, what it costs

Pitcher Locations
where he throws it · catcher’s view
0%0%0%0%1%1%0%3%1%9%2%5%10%17%13%5%3%6%6%1%6%3%4%1%3%
Rare 0% · Common 10% · Very common 20%+
Sinker (41% usage) has allowed .476 xwOBA over 14 balls in play — his most-used pitch.

Arsenal

usage × whiff, ranked

5 pitch types · 236-pitch sample · 2026/2025/2024 blend, weighted 4/3/1

Sinker SI
41% usage · 22% whiff · .476 xwOBA · 89.4 mph
Sweeper ST
39% usage · 31% whiff · .431 xwOBA · 81.9 mph
Cutter FC
13% usage · .320 xwOBA
Changeup CH
7% usage · .530 xwOBA
Unknown UN
1% usage
Whiff% Trend
last 8 outings · by pitch · min 5 swings per point
0102030405060703/153/236/216/236/256/276/297/7
SinkerSweeperCutter
Hand Splits
K% + xwOBA allowed by batter side · 2026/2025/2024 blend, weighted 4/3/1
SplitK%xwOBASample
vs. LHB– – 17
vs. RHB14.6 – 29
Live · client-hydrated

Market lines

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

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Live · client-hydrated

DFS picks

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

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