⚾ Data Hub

Zack Kelly

Boston Red Sox · RP

Throws: R

Age: 31

Ht: 6'3"

Wt: 231 lbs

0-2

W-L

3.31

ERA

19.7%

K%

9.9%

BB%

.368

xwOBA

.432

xSLG

24.7%

CSW%

38.8%

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	17		0-2	16.1	3.31	14	19.7%	9.9%	.289	.368	.432	38.8%	46.9%	18.4%	30.6%
2025	28	0	1-3	35.1	4.58	35	23.0%	7.9%	-	-	-	20.6%	40.0%	37.0%	23.0%
2024	49	3	6-3	56.2	3.97	61	25.3%	11.2%	.226	.317	.410	26.5%	47.3%	34.7%	18.0%
2023	8	0	0-0	9.1	3.86	6	14.0%	18.6%	-	-	-	19.2%	53.8%	38.5%	7.7%
2022	13	0	1-0	13.2	3.95	11	18.6%	6.8%	-	-	-	25.0%	45.5%	40.9%	13.6%

2026 Pitch Arsenal

Cutter 124 thrown

Usage43.8%

K%16.1%

Whiff%21.2%

Putaway%38.5%

xwOBA.462

xSLG.627

Hard Hit%54.5%

Sweeper 62 thrown

Usage21.9%

K%25.0%

Whiff%28.6%

Putaway%14.8%

xwOBA.151

xSLG.209

Hard Hit%25.0%

Sinker 48 thrown

Usage17.0%

K%7.7%

Whiff%10.5%

Putaway%7.7%

xwOBA.468

xSLG.468

Hard Hit%27.3%

4-Seamer 39 thrown

Usage13.8%

K%36.4%

Whiff%18.2%

Putaway%17.4%

xwOBA.272

xSLG.105

Hard Hit%25.0%

2025 Pitch Arsenal

Cutter 182 thrown

Usage31.3%

K%11.1%

Whiff%20.2%

Putaway%16.2%

xwOBA.301

xSLG.310

Hard Hit%26.8%

Sweeper 120 thrown

Usage20.7%

K%40.7%

Whiff%25.5%

Putaway%19.6%

xwOBA.266

xSLG.370

Hard Hit%33.3%

4-Seamer 115 thrown

Usage19.8%

K%25.8%

Whiff%27.4%

Putaway%17.0%

xwOBA.345

xSLG.442

Hard Hit%44.4%

2024 Pitch Arsenal

4-Seamer 286 thrown

Usage29.9%

K%24.7%

Whiff%23.0%

Putaway%17.9%

xwOBA.402

xSLG.480

Hard Hit%38.6%

Sweeper 260 thrown

Usage27.2%

K%32.8%

Whiff%34.4%

Putaway%21.3%

xwOBA.164

xSLG.191

Hard Hit%15.8%

Cutter 209 thrown

Usage21.9%

K%11.5%

Whiff%21.9%

Putaway%22.2%

xwOBA.382

xSLG.522

Hard Hit%46.3%

Changeup 200 thrown

Usage20.9%

K%34.1%

Whiff%32.6%

Putaway%20.5%

xwOBA.301

xSLG.477

Hard Hit%17.9%

2022 Pitch Arsenal

4-Seamer 105 thrown

Usage47.3%

K%14.8%

Whiff%11.6%

Putaway%17.4%

xwOBA.194

xSLG.190

Hard Hit%23.8%

Platoon Splits - 2026

Split	PA	xAVG	xwOBA	xSLG	K%	BB%	HR
vs LHB	21	.335	.410	.598	28.6%	4.8%	1
vs RHB	50	.268	.352	.353	16.0%	12.0%	0
Home	45	.288	.352	.389	17.8%	6.7%	0
Road	26	.293	.395	.509	23.1%	15.4%	1

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 19	@ KC	-	0.2	1	0	0	0	8	3	0.0%	-131	7.5	4.1	-	-	0.9
May 14	vs PHI	-	0.2	2	0	0	1	26	6	3.8%	-123	7.0	3.7	-	-	1.7
May 12	vs PHI	-	1.0	0	0	0	1	11	3	9.1%	+119	8.0	3.5	-	-	4.3
May 10	vs TB	-	0.1	1	1	1	0	16	3	0.0%	-149	8.0	4.6	-	-	-2.5
May 6	@ DET	-	1.0	0	0	2	2	25	5	8.0%	-110	8.5	4.2	-	-	5.1
May 3	vs HOU	L	1.0	1	2	2	0	19	5	0.0%	-186	8.5	5.3	-	-	-3.6
May 1	vs HOU	H	1.1	2	0	0	2	19	6	10.5%	-122	9.0	4.7	-	-	5.8
Apr 28	@ TOR	-	1.0	1	0	1	2	20	5	10.0%	-105	7.5	3.7	-	-	5.1
Apr 26	@ BAL	H	0.1	0	0	0	0	4	1	0.0%	+113	7.5	3.4	-	-	0.8
Apr 22	vs NYY	-	1.0	0	0	0	2	11	3	18.2%	+109	7.5	3.4	-	-	6.3
Apr 20	vs DET	-	1.2	1	0	0	1	27	6	3.7%	-136	8.0	4.4	-	-	5.2
Apr 18	vs DET	-	1.0	1	0	0	0	19	4	0.0%	+119	6.5	2.8	-	-	1.7
Apr 12	@ STL	-	2.0	1	1	0	2	23	7	8.7%	-115	9.0	4.6	-	-	5.9
Apr 10	@ STL	L	0.2	2	2	1	0	18	5	0.0%	-136	7.0	3.9	-	-	-4.3
Apr 7	vs MIL	H	0.2	0	0	0	0	11	2	0.0%	-163	6.5	3.9	-	-	1.5
Apr 5	vs SD	-	1.0	1	1	0	0	17	4	0.0%	-156	9.0	5.2	-	-	-0.4
Apr 4	vs SD	-	1.0	0	0	0	1	9	3	11.1%	-149	7.5	4.3	-	-	4.3