Isaac Mattson

Relief pitcher for Pittsburgh

Age: 30, 214 lbs, 6'2"

Born: 7/14/1995, Erie, PA, USA

Sal: N/A

PLAYER NEWS REPORT 11 days

Pitches scoreless inning in loss.

Allowed two hits while striking out two in one inning Monday in a 5-0 loss to the Padres.

Seasons	City	GP	CG	IP	ERA	W	L	ShO	Sv	H	2B	3B	HR	SO	HB	BB	WP	Bk	R	ER	NH	WHIP	K/9	PPts	PPts/GP
2026	PIT	11	0	11.7	1.54	0	0	0	0	12	1	0	0	9	0	6	0	0	2	2	0	1.54	6.94	0.0	0.0
2025	PIT	44	0	47.7	2.45	3	3	0	0	35	7	0	4	45	2	19	0	0	14	13	0	1.13	8.50	15.0	0.3
2024	PIT	3	0	5.3	5.06	0	0	0	0	1	0	0	0	6	1	5	0	0	3	3	0	1.13	10.13	0.0	0.0
2021	BAL	4	0	4.3	6.23	0	0	0	0	5	1	0	0	3	0	5	1	0	3	3	0	2.31	6.23	0.0	0.0

		62	0	69.0	3.82	3	3	0	0	53	9	0	4	63	3	35	1	0	22	21	0	1.53	7.95	15.0	0.1

Date	Opp	Res	CG	IP	ERA	W	L	ShO	Sv	H	2B	3B	HR	SO	HB	BB	WP	Bk	R	ER	NH	WHIP	K/9	PPts
4/18/2026	TB	L7 - 8	0	1.0	0.00	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0.00	0.00	0.0
4/16/2026	WSH	L7 - 8	0	1.0	0.00	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	1.00	0.00	0.0
4/14/2026	WSH	L4 - 5	0	2.0	0.00	0	0	0	0	2	1	0	0	1	0	0	0	0	0	0	0	1.00	4.50	0.0
4/11/2026	CHC@	W4 - 3	0	1.0	0.00	0	0	0	0	2	0	0	0	1	0	0	0	0	0	0	0	2.00	9.00	0.0
4/10/2026	CHC@	W2 - 0	0	1.0	0.00	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	1.00	0.00	0.0
4/7/2026	SD	W7 - 1	0	0.7	0.00	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	1.50	0.00	0.0
4/6/2026	SD	L0 - 5	0	1.0	0.00	0	0	0	0	2	0	0	0	2	0	0	0	0	0	0	0	2.00	18.00	0.0
4/4/2026	BAL	W3 - 2	0	1.0	0.00	0	0	0	0	1	0	0	0	1	0	1	0	0	0	0	0	2.00	9.00	0.0
4/1/2026	CIN@	W8 - 3	0	1.3	0.00	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	0.75	0.00	0.0
3/30/2026	CIN@	L0 - 2	0	1.0	0.00	0	0	0	0	0	0	0	0	1	0	1	0	0	0	0	0	1.00	9.00	0.0

			0	11.0	0.00	0	0	0	0	9	1	0	0	6	0	4	0	0	0	0	0	1.23	4.95	0.0

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Date	Visit.	Home	Time
4/19/2026	Rays	Pirates	1:35 PM
4/21/2026	Pirates	Rangers	8:05 PM
4/22/2026	Pirates	Rangers	8:05 PM
4/23/2026	Pirates	Rangers	8:05 PM
4/24/2026	Pirates	Brewers	7:40 PM
4/25/2026	Pirates	Brewers	7:10 PM
4/26/2026	Pirates	Brewers	2:10 PM
4/27/2026	Cardinals	Pirates	6:40 PM
4/28/2026	Cardinals	Pirates	6:40 PM
4/29/2026	Cardinals	Pirates	6:40 PM

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Player	Pos	City	Injured date	Type	Description	+

Player	Pos	City	Transaction date	Description
I. Mattso	RP	PIT	6/7/2025	Recalled by Pittsburgh.
I. Mattso	RP	PIT	5/26/2025	Optioned to Triple-A.
I. Mattso	RP	PIT	5/20/2025	Promoted.
I. Mattso	RP	PIT	11/4/2024	Removed from 40-man roster.
I. Mattso	RP	PIT	9/19/2024	Selected from Triple-A.
I. Mattso	RP	PIT	7/19/2022	Time's up in Baltimore organization.
I. Mattso	RP	PIT	4/8/2022	Outrighted to Triple-A
I. Mattso	RP	PIT	4/6/2022	Sent to Triple-A.
I. Mattso	RP	PIT	10/1/2021	Recalled by Orioles.
I. Mattso	RP	PIT	8/12/2021	Sent to Triple-A.

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Player	Pos	City	Game Date	Corr. Date	Corr.	Description	Game log

Stars of the month

Date	Player	City	Pos	Star
March 26, 2026	I. Mattso	PIT	RP	NA
March 29, 2026	I. Mattso	PIT	RP	NA
March 30, 2026	I. Mattso	PIT	RP	NA
April 01, 2026	I. Mattso	PIT	RP	NA
April 04, 2026	I. Mattso	PIT	RP	NA
April 06, 2026	I. Mattso	PIT	RP	NA
April 07, 2026	I. Mattso	PIT	RP	NA
April 10, 2026	I. Mattso	PIT	RP	NA
April 11, 2026	I. Mattso	PIT	RP	NA
April 14, 2026	I. Mattso	PIT	RP	NA
April 16, 2026	I. Mattso	PIT	RP	NA

Stars of the week

Date	Player	City	Pos	Star
March 26, 2026	I. Mattso	PIT	RP	2nd star
April 04, 2026	I. Mattso	PIT	RP	3rd star