RunsLeft › Pitchers › Stephen Kolek

Starting Pitcher · Kansas City Royals

Stephen Kolek

RHP · Throws Right · Age 29Starter

ERA

4.50

FIP

–

54.0

W-L

4-3

WHIP

1.24

15.2

BB%

5.4

GB%

–

K/9

5.7

HR/9

1.3

Drafted by the Los Angeles Dodgers in 2018 (round 11), he was acquired by the Kansas City Royals via trade from the San Diego Padres in July 2025. He made his MLB debut on March 21, 2024.Facts: MLB StatsAPI (people · transactions)

No scheduled start today. The model projection and lineup matchup appear on start days.

Four-Seam Fastball

FF · lead pitch

26% of pitches · .324 xwOBA allowed · 175 BIP · where it goes, what it costs

Pitcher Locations

where he throws it · catcher’s view

Rare 0% · Common 10% · Very common 20%+

xwOBA Allowed

damage done by zone · all batters

Cold .200 · Avg .310 · Hot .500+

Expected Damage

locations × damage zones

Low risk · Average · High-risk zone

Four-Seam Fastball (26% usage) has allowed .324 xwOBA over 175 balls in play — his most-used pitch.

Arsenal

usage × whiff, ranked

6 pitch types · 3,317-pitch sample · 2026/2025/2024 blend, weighted 4/3/1

Four-Seam Fastball FF

26% usage · 16% whiff · .324 xwOBA · 94.2 mph

Sinker SI

25% usage · 10% whiff · .324 xwOBA · 93.7 mph

Slider SL

16% usage · 28% whiff · .304 xwOBA · 85.6 mph

Cutter FC

14% usage · 18% whiff · .296 xwOBA · 90.2 mph

Changeup CH

11% usage · 20% whiff · .264 xwOBA · 87.1 mph

Sweeper ST

8% usage · 15% whiff · .386 xwOBA · 79.9 mph

Whiff% Trend

last 8 outings · by pitch · min 5 swings per point

Four-Seam FastballSinkerSlider

Hand Splits

K% + xwOBA allowed by batter side · 2026/2025/2024 blend, weighted 4/3/1

Split	K%	xwOBA	Sample
vs. LHB	18.9	.321	462
vs. RHB	13.2	.308	422

Live · client-hydrated

Market lines

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

Live lines load in your browser.

Live · client-hydrated

DFS picks

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

Today’s picks load in your browser.