Mason Thompson

Starting pitcher for Washington

Age: 27, 241 lbs, 6'6"

Born: 2/20/1998, Round Rock, TX, USA

Sal: N/A

Currently Released

TRANSACTION REPORT 3 days

Enters free agency.

Cleared waivers Wednesday and elected free agency.

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
2025	WSH	14	0	10.7	11.81	1	1	0	0	16	5	1	1	11	0	12	0	0	16	14	0	2.62	9.28	5.0	0.4
2023	WSH	51	0	54.0	5.50	4	4	0	1	62	10	2	4	44	4	22	4	0	35	33	0	1.56	7.33	23.0	0.5
2022	WSH	24	0	24.7	2.92	1	1	0	1	19	2	1	2	15	1	9	1	0	8	8	0	1.14	5.47	8.0	0.3
2021	WSH	31	0	24.7	4.01	1	3	0	0	32	5	0	4	23	1	15	3	0	15	11	0	1.91	8.39	5.0	0.2

		120	0	114.0	6.06	7	9	0	2	129	22	4	11	93	6	58	8	0	74	66	0	1.81	7.62	41.0	0.3

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
9/19/2025	NYM@	L6 - 12	0	1.0	27.00	0	0	0	0	2	1	0	0	2	0	3	0	0	3	3	0	5.00	18.00	0.0
9/16/2025	ATL	L0 - 5	0	0.3	108.00	0	1	0	0	3	1	1	0	1	0	1	0	0	5	4	0	12.00	27.00	0.0
9/14/2025	PIT	W4 - 3	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
9/11/2025	MIA@	L0 - 5	0	1.0	0.00	0	0	0	0	1	0	0	0	1	0	0	0	0	0	0	0	1.00	9.00	0.0
9/10/2025	MIA@	L3 - 8	0	0.3	0.00	0	0	0	0	1	0	0	0	0	0	0	0	0	0	0	0	3.00	0.00	0.0
9/7/2025	CHC@	W6 - 3	0	1.0	9.00	1	0	0	0	2	0	0	1	1	0	0	0	0	1	1	0	2.00	9.00	5.0
9/3/2025	MIA	W10 - 5	0	1.0	0.00	0	0	0	0	1	1	0	0	1	0	1	0	0	1	0	0	2.00	9.00	0.0
8/30/2025	TB	L1 - 4	0	1.0	0.00	0	0	0	0	0	0	0	0	1	0	0	0	0	0	0	0	0.00	9.00	0.0
7/21/2025	CIN	W10 - 8	0	0.3	27.00	0	0	0	0	0	0	0	0	0	0	2	0	0	1	1	0	6.00	0.00	0.0
7/18/2025	SD	L2 - 7	0	0.7	0.00	0	0	0	0	0	0	0	0	0	0	1	0	0	0	0	0	1.50	0.00	0.0

			0	7.7	17.10	1	1	0	0	10	3	1	1	8	0	9	0	0	11	9	0	3.35	9.00	5.0

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Date	Visit.	Home	Time

Player	Pos	City	Injured date	Type	Description	+

Player	Pos	City	Transaction date	Description
M. Thomps	SP	WSH	10/29/2025	Enters free agency.
M. Thomps	SP	WSH	9/23/2025	Shelved with biceps tendinitis.
M. Thomps	SP	WSH	8/30/2025	Back up with big club.
M. Thomps	SP	WSH	7/22/2025	Moves down to Triple-A.
M. Thomps	SP	WSH	7/5/2025	Back from injured list.
M. Thomps	SP	WSH	2/19/2025	Goes on 60-day injured list.
M. Thomps	SP	WSH	11/21/2024	Agrees to deal with Nats.
M. Thomps	SP	WSH	3/24/2024	Moves to 60-day IL.
M. Thomps	SP	WSH	9/13/2023	Optioned to Rochester.
M. Thomps	SP	WSH	8/20/2023	Returns from injured list.

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Player	Pos	City	Game Date	Corr. Date	Corr.	Description
M. Thomps	SP	WSH	5/30/2023	6/16/2023	+1	Hits allowed
M. Thomps	SP	WSH	5/30/2023	6/16/2023	+2	Earned runs allowed

Stars of the month

Date	Player	City	Pos	Star
July 06, 2025	M. Thomps	WSH	SP	NA
July 08, 2025	M. Thomps	WSH	SP	NA
July 10, 2025	M. Thomps	WSH	SP	NA
July 13, 2025	M. Thomps	WSH	SP	NA
July 18, 2025	M. Thomps	WSH	SP	NA
July 21, 2025	M. Thomps	WSH	SP	NA
August 30, 2025	M. Thomps	WSH	SP	NA
September 03, 2025	M. Thomps	WSH	SP	NA
September 07, 2025	M. Thomps	WSH	SP	NA
September 10, 2025	M. Thomps	WSH	SP	Rookie star
September 11, 2025	M. Thomps	WSH	SP	NA
September 14, 2025	M. Thomps	WSH	SP	NA
September 16, 2025	M. Thomps	WSH	SP	NA
September 19, 2025	M. Thomps	WSH	SP	NA

Stars of the week

Date	Player	City	Pos	Star
July 10, 2025	M. Thomps	WSH	SP	NA
July 21, 2025	M. Thomps	WSH	SP	1st star
September 07, 2025	M. Thomps	WSH	SP	1st star
September 16, 2025	M. Thomps	WSH	SP	Rookie star
September 19, 2025	M. Thomps	WSH	SP	3rd star