⚾ Data Hub

Isaac Mattson

Pittsburgh Pirates · RP

Throws: R

Age: 30

Ht: 6'2"

Wt: 214 lbs

0-0

W-L

4.12

ERA

17.2%

K%

11.5%

BB%

.383

xwOBA

.497

xSLG

23.2%

CSW%

49.2%

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	21		0-0	19.2	4.12	15	17.2%	11.5%	.302	.383	.497	49.2%	21.3%	36.1%	34.4%
2025	44	0	3-3	47.2	2.45	45	22.7%	9.6%	-	-	-	32.6%	27.1%	56.6%	16.3%
2024	3	0	0-0	5.1	5.06	6	26.1%	21.7%	-	-	-	36.4%	54.5%	27.3%	18.2%
2021	4	0	0-0	4.1	6.23	3	13.0%	21.7%	-	-	-	40.0%	33.3%	60.0%	6.7%

2026 Pitch Arsenal

4-Seamer 288 thrown

Usage80.7%

K%14.7%

Whiff%17.8%

Putaway%11.3%

xwOBA.381

xSLG.486

Hard Hit%49.1%

Slider 15 thrown

Usage4.2%

K%66.7%

Whiff%44.4%

Putaway%50.0%

xwOBA.152

xSLG.184

Hard Hit%0.0%

2025 Pitch Arsenal

4-Seamer 610 thrown

Usage78.5%

K%25.4%

Whiff%23.1%

Putaway%19.1%

xwOBA.288

xSLG.332

Hard Hit%40.0%

Changeup 91 thrown

Usage11.7%

K%12.1%

Whiff%19.6%

Putaway%10.5%

xwOBA.316

xSLG.445

Hard Hit%42.9%

Platoon Splits - 2026

Split	PA	xAVG	xwOBA	xSLG	K%	BB%	HR
vs LHB	41	.265	.381	.502	17.1%	17.1%	0
vs RHB	46	.332	.385	.494	17.4%	6.5%	0
Home	47	.308	.389	.494	17.0%	10.6%	0
Road	40	.295	.376	.501	17.5%	12.5%	0

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 17	vs PHI	-	1.0	1	0	0	0	15	5	0.0%	-131	7.5	4.1	-	-	1.1
May 16	vs PHI	-	1.1	0	0	1	2	25	5	8.0%	+141	8.5	3.4	-	-	6.4
May 10	@ SF	-	0.1	3	2	0	0	18	4	0.0%	+109	8.0	3.7	-	-	-5.1
May 7	@ ARI	H	0.1	0	0	0	1	6	1	16.7%	-103	8.5	4.1	-	-	2.8
Apr 30	vs STL	-	0.2	3	5	2	0	31	7	0.0%	-232	7.0	4.7	-	-	-11.5
Apr 27	vs STL	H	0.1	0	0	0	1	3	1	33.3%	-120	8.0	4.2	-	-	2.8
Apr 25	@ MIL	-	1.0	0	0	0	0	4	3	0.0%	+115	8.0	3.6	-	-	2.3
Apr 24	@ MIL	-	1.0	0	0	1	1	14	4	7.1%	-115	7.0	3.6	-	-	3.7
Apr 19	vs TB	H	1.0	0	0	0	1	8	3	12.5%	-121	8.0	4.2	-	-	4.3
Apr 18	vs TB	-	1.0	0	0	0	0	13	3	0.0%	-163	7.0	4.2	-	-	2.3
Apr 16	vs WSH	-	1.0	0	0	1	0	18	4	0.0%	-169	8.5	5.1	-	-	1.7
Apr 14	vs WSH	-	2.0	2	0	0	1	33	7	3.0%	-186	9.5	5.9	-	-	5.3
Apr 11	@ CHC	H	1.0	2	0	0	1	24	5	4.2%	+123	6.5	2.8	-	-	3.1
Apr 10	@ CHC	H	1.0	0	0	1	0	12	4	0.0%	+129	6.5	2.7	-	-	1.7
Apr 7	vs SD	H	0.2	1	0	0	0	9	3	0.0%	-154	6.0	3.5	-	-	0.9
Apr 6	vs SD	-	1.0	2	0	0	2	21	5	9.5%	-143	8.5	4.8	-	-	5.1
Apr 4	vs BAL	-	1.0	1	0	1	1	17	4	5.9%	-115	8.5	4.3	-	-	3.1
Apr 1	@ CIN	H	1.1	1	0	0	0	22	5	0.0%	-150	7.5	4.3	-	-	2.4
Mar 30	@ CIN	-	1.0	0	0	1	1	15	4	6.7%	+113	8.5	3.8	-	-	3.7
Mar 29	@ NYM	-	1.0	0	0	0	2	13	3	15.4%	+153	7.5	2.8	-	-	6.3