⚾ Data Hub

Stephen Kolek

Kansas City Royals · RP

Throws: R

Age: 29

Ht: 6'3"

Wt: 210 lbs

4-1

W-L

2.68

ERA

17.2%

K%

5.1%

BB%

.304

xwOBA

.383

xSLG

25.1%

CSW%

38.6%

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	8		4-1	50.1	2.68	34	17.2%	5.1%	.263	.304	.383	38.6%	46.4%	21.7%	25.3%
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 218 thrown

Usage27.7%

K%7.5%

Whiff%18.1%

Putaway%5.5%

xwOBA.267

xSLG.345

Hard Hit%25.7%

Sinker 173 thrown

Usage22.0%

K%6.6%

Whiff%6.0%

Putaway%11.1%

xwOBA.314

xSLG.371

Hard Hit%48.1%

Slider 132 thrown

Usage16.8%

K%34.1%

Whiff%42.7%

Putaway%26.3%

xwOBA.273

xSLG.342

Hard Hit%42.3%

Changeup 98 thrown

Usage12.5%

K%16.1%

Whiff%18.4%

Putaway%17.9%

xwOBA.350

xSLG.426

Hard Hit%25.0%

Cutter 91 thrown

Usage11.6%

K%26.3%

Whiff%19.6%

Putaway%55.6%

xwOBA.272

xSLG.435

Hard Hit%42.9%

Sweeper 74 thrown

Usage9.4%

K%11.1%

Whiff%9.5%

Putaway%12.5%

xwOBA.380

xSLG.483

Hard Hit%46.7%

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	118	.258	.295	.388	20.3%	4.2%	4
vs RHB	95	.270	.316	.378	10.5%	6.3%	4
Home	115	.282	.305	.381	10.4%	3.5%	4
Road	98	.240	.303	.387	22.4%	7.1%	4

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
Jun 21	vs STL	L	1.2	9	9	1	0	49	15	0.0%	+104	9.0	4.2	-	-	-20.9
Jun 14	vs HOU	W	7.1	5	0	1	4	97	26	4.1%	-122	8.5	4.5	-	-	24.9
Jun 9	vs TEX	-	5.0	8	1	1	3	86	23	3.5%	+101	9.0	4.3	-	-	9.9
Jun 3	@ CIN	-	7.0	6	2	2	8	96	28	8.3%	+130	8.5	3.5	-	-	23.0
May 29	@ TEX	L	5.0	6	4	1	5	91	23	5.5%	+114	7.5	3.4	-	-	9.1
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