⚾ Data Hub

Stephen Kolek

Kansas City Royals · RP

Throws: R

Age: 29

Ht: 6'3"

Wt: 210 lbs

3-0

W-L

2.77

ERA

14.3%

K%

5.1%

BB%

.283

xwOBA

.348

xSLG

25.1%

CSW%

37.2%

HH%

Season-by-Season Statistics

Overview						Rate			Expected			Batted Ball
Year	G	GS	W-L	IP	ERA	SO	K%	BB%	xAVG	xwOBA	xSLG	HH%	GB%	FB%	LD%
2026	4		3-0	26.0	2.77	14	14.3%	5.1%	.244	.283	.348	37.2%	47.4%	23.1%	23.1%
2025	19	19	5-7	112.2	3.51	77	16.7%	6.7%	.263	.320	.400	35.3%	51.4%	29.2%	19.4%
2024	42	0	3-0	46.2	5.21	39	18.5%	5.7%	.280	.326	.407	23.7%	55.9%	20.4%	23.7%

2026 Pitch Arsenal

4-Seamer 105 thrown

Usage28.6%

K%0.0%

Whiff%13.5%

Putaway%0.0%

xwOBA.366

xSLG.504

Hard Hit%33.3%

Sinker 81 thrown

Usage22.1%

K%14.8%

Whiff%2.9%

Putaway%19.0%

xwOBA.294

xSLG.360

Hard Hit%52.4%

Changeup 58 thrown

Usage15.8%

K%16.7%

Whiff%22.2%

Putaway%17.6%

xwOBA.301

xSLG.298

Hard Hit%15.4%

Cutter 51 thrown

Usage13.9%

K%14.3%

Whiff%12.5%

Putaway%33.3%

xwOBA.197

xSLG.265

Hard Hit%41.7%

Slider 36 thrown

Usage9.8%

K%30.8%

Whiff%34.8%

Putaway%21.1%

xwOBA.229

xSLG.292

Hard Hit%50.0%

Sweeper 36 thrown

Usage9.8%

K%10.0%

Whiff%16.7%

Putaway%20.0%

xwOBA.272

xSLG.349

Hard Hit%22.2%

2025 Pitch Arsenal

4-Seamer 432 thrown

Usage25.6%

K%22.7%

Whiff%15.4%

Putaway%16.8%

xwOBA.350

xSLG.462

Hard Hit%51.4%

Sinker 407 thrown

Usage24.1%

K%9.8%

Whiff%13.1%

Putaway%15.3%

xwOBA.328

xSLG.361

Hard Hit%51.5%

Slider 280 thrown

Usage16.6%

K%18.1%

Whiff%21.3%

Putaway%15.5%

xwOBA.312

xSLG.401

Hard Hit%49.3%

Cutter 257 thrown

Usage15.2%

K%13.6%

Whiff%19.0%

Putaway%24.3%

xwOBA.322

xSLG.402

Hard Hit%44.0%

Changeup 196 thrown

Usage11.6%

K%26.2%

Whiff%24.7%

Putaway%21.2%

xwOBA.204

xSLG.247

Hard Hit%41.9%

Sweeper 115 thrown

Usage6.8%

K%14.8%

Whiff%18.4%

Putaway%11.1%

xwOBA.372

xSLG.559

Hard Hit%34.8%

2024 Pitch Arsenal

Sinker 328 thrown

Usage41.2%

K%11.6%

Whiff%19.3%

Putaway%13.5%

xwOBA.332

xSLG.351

Hard Hit%56.3%

Cutter 152 thrown

Usage19.1%

K%9.8%

Whiff%19.8%

Putaway%12.5%

xwOBA.278

xSLG.363

Hard Hit%13.9%

Platoon Splits - 2026

Split	PA	xAVG	xwOBA	xSLG	K%	BB%	HR
vs LHB	69	.237	.264	.328	18.8%	4.3%	1
vs RHB	29	.264	.328	.400	3.4%	6.9%	2
Home	51	.234	.244	.311	9.8%	2.0%	1
Road	47	.257	.325	.392	19.1%	8.5%	2

Recent Game Logs - 2026

Game			Pitching								Vegas			Weather		DFS
Date	Opp	Dec	IP	H	ER	BB	SO	Pit	BF	CSW%	ML	O/U	TT	Tmp	Wind	DKFP
May 23	vs SEA	W	9.0	4	0	1	2	108	29	1.9%	+105	8.5	4.0	-	-	30.3
May 17	@ STL	W	6.1	4	0	1	3	82	24	3.7%	+104	9.5	4.5	-	-	20.7
May 12	@ CWS	-	4.2	5	5	3	6	94	23	6.4%	-120	9.5	5.0	-	-	7.7
May 5	vs CLE	W	6.0	4	3	0	3	83	22	3.6%	-105	7.5	3.7	-	-	15.1