Mason Thompson

Position: Pitcher

Bats: Right • Throws: Right

6-6, 241lb (198cm, 109kg)

Team: Washington Nationals (majors, 60-day IL)

Born: February 20, 1998 in Round Rock, TX us

Draft: Drafted by the San Diego Padres in the 3rd round of the 2016 MLB June Amateur Draft from Round Rock HS (Round Rock, TX).

High School: Round Rock HS (Round Rock, TX)

Debut: June 22, 2021 (Age 23-122d, 22,416th in major league history)
vs. LAD 0.1 IP, 0 H, 0 SO, 1 BB, 0 ER

Rookie Status: Exceeded rookie limits during 2021 season

2024 Contract Status: Pre-Arb Eligible

Service Time (01/2024): 2.046 • Arb Eligible: 2025 • Free Agent: 2028

National Team: us USA (15U)

Full Name: Mason Lane Thompson

Twitter: @MasonThompson22

Instagram: @mason_thompson22

View Player Info from the B-R Bullpen

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SUMMARY

Career

WAR

0.0

ERA

4.53

106

103.1

WHIP

1.539

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Team Record in Appearances: 25-26

Days of Rest

Inning/Score Appearance Matrix

Multiple inning appearances: 16, Entered with runners on base: 13

2023 Pitching Game Log

Click two rows to sum games (Clear)

2023 Pitching Game Log
Rk	Gcar	Gtm	Date	Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	Pit	Str	StL	StS	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	DFS(DK)	DFS(FD)	Entered	Exited
1	56	1	Mar 30	WSN		ATL	L,2-7	6-7		99	2.0	1	0	0	0	3	0	0	0.00	0.26	7	23	18	6	2	1	3	1	1	0		0	0	0	0	0	7	0	0	0	0	0	0	.50	0.074	.50	0.04%	1.02	9.90	15.00	6t --- 0 out d2	7t 3 out d2
2	57	4	Apr 3	WSN		TBR	L,2-6	6-8		3	3.0	1	1	1	0	1	1	0	1.80	4.26	10	32	21	6	2	4	5	2	0	0		0	0	0	0	0	10	0	0	0	0	0	0	.19	0.001	.16	0.00%	0.53	6.15	9.00	6t --- 0 out d4	8t 3 out d4
3	58	7	Apr 6	WSN	@	COL	L,0-1	7-GF(8)		2	2.0	1	0	0	0	3	0	0	1.29	3.11	7	25	18	4	8	3	1	0	0	0		0	0	0	0	0	7	0	0	0	0	0	0	.58	0.092	.45	0.04%	1.20	9.90	15.00	7b --- 0 out d1	8b end d 1
4	59	9	Apr 8	WSN	@	COL	W,7-6	7-7		1	1.0	0	0	0	0	0	0	0	1.13	3.13	3	9	6	1	2	1	2	0	1	0		0	0	0	0	0	3	0	0	0	0	0	0	.55	0.044	.42	0.02%	0.60	2.25	3.00	7b --- 0 out a4	7b 3 out a4
5	60	11	Apr 10	WSN	@	LAA	W,6-4	6-6	H(1)	1	0.2	0	0	0	0	0	0	1	1.04	3.49	3	13	8	2	0	1	1	0	0	0		0	0	0	0	0	2	0	0	0	0	0	0	2.05	0.047	1.50	0.02%	0.29	0.90	2.00	6b --- 0 out a1	6b 1-- 2 out a1
6	61	13	Apr 12	WSN	@	LAA	L,2-3	4-6	L(0-1)	1	1.2	3	1	1	1	1	0	0	1.74	3.55	8	21	14	3	1	2	4	4	0	0		3	0	0	0	0	7	2	0	0	0	0	0	1.71	-0.008	1.25	0.00%	0.31	1.35	5.00	4b 123 2 out tie	6b 1-- 1 out d1
7	62	16	Apr 16	WSN		CLE	W,7-6	8-8	W(1-1)	3	1.0	1	0	0	0	0	0	0	1.59	3.52	3	13	8	1	4	2	1	1	0	0		0	0	0	0	0	3	0	0	0	0	0	0	.93	0.053	.51	0.02%	0.51	5.65	9.00	8t --- 0 out d1	8t 3 out d1
8	63	17	Apr 18	WSN		BAL	L,0-1	6-7		1	2.0	0	0	0	0	1	0	0	1.35	3.33	5	19	13	4	2	3	1	1	0	0		1	0	0	1	0	5	0	0	0	0	0	0	1.01	0.150	.58	0.05%	1.40	6.50	9.00	6t 1-- 0 out d1	7t 3 out d1
9	64	20	Apr 22	WSN	@	MIN	W,10-4	4-6	W(2-1)	3	2.1	2	1	0	0	4	0	0	1.15	2.81	10	35	27	9	3	0	6	3	1	0		2	0	0	0	0	10	0	0	0	0	0	0	1.26	0.077	.67	0.02%	0.48	16.05	25.00	4b 12- 2 out a4	6b 3 out a3
10	65	22	Apr 25	WSN	@	NYM	W,5-0	7-GF	S(1)	2	3.0	1	0	0	0	4	0	0	0.96	2.45	9	28	22	8	6	5	0	0	0	0		0	0	0	0	0	9	0	0	0	1	0	0	.23	0.044	.14	0.02%	1.54	14.15	21.00	7b --- 0 out a5	9b end a 5
11	66	24	Apr 27	WSN	@	NYM	L,8-9	8-8	BL(2-2)	1	0.1	3	2	2	0	0	0	0	1.89	2.47	4	15	9	2	1	0	4	2	0	0		0	0	1	0	0	4	1	1	0	0	0	0	3.23	-0.593	2.42	-0.27%	-2.44	-5.05	-5.00	8b --- 0 out a1	8b --3 1 out d1
May				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	Pit	Str	StL	StS	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	DFS(DK)	DFS(FD)	Entered	Exited
12	67	28	May 1	WSN		CHC	L,1-5	5-5		3	1.0	0	0	0	0	2	0	0	1.80	2.31	3	13	9	1	3	0	1	0	1	0		1	0	0	0	0	3	0	0	0	0	0	0	.62	0.046	.35	0.02%	0.90	6.25	9.00	5t 1-- 0 out d3	5t 3 out d3
13	68	29	May 2	WSN		CHC	W,4-1	7-7	BS(2)	0	0.2	1	1	1	1	1	1	0	2.18	3.01	4	17	11	4	1	0	2	0	1	0		0	0	0	0	0	3	0	0	0	0	0	0	1.93	-0.147	.95	-0.04%	-0.72	0.30	2.00	7t --- 0 out a1	7t 1-- 2 out tie
14	69	33	May 6	WSN	@	ARI	L,7-8	8-8		3	0.1	4	3	3	0	0	0	0	3.43	3.02	6	16	10	2	0	5	1	1	0	0		0	0	0	0	0	5	0	0	0	0	0	1	.50	-0.124	.32	-0.05%	-3.41	-7.65	-8.00	8b --- 0 out d1	8b 12- 1 out d4
15	70	36	May 9	WSN	@	SFG	L,1-4	7-7		2	1.0	1	1	1	2	1	0	0	3.68	3.21	6	28	16	5	1	2	1	1	0	0		0	0	1	0	0	4	0	0	0	0	0	0	.50	-0.041	.36	-0.02%	-0.49	0.45	3.00	7b --- 0 out d2	7b 3 out d3
16	71	40	May 14	WSN		NYM	L,2-8	5-5		4	0.1	2	2	2	1	0	0	0	4.43	3.34	4	17	9	4	1	2	1	0	0	0		3	3	1	0	0	3	0	0	0	0	0	0	.88	-0.206	.58	-0.08%	-4.22	-5.05	-5.00	5t 123 2 out d2	5t 3 out d7
17	72	44	May 18	WSN	@	MIA	L,3-5	7-7		3	1.0	2	1	1	0	0	0	0	4.63	3.34	5	13	8	0	2	4	1	1	0	0		0	0	0	0	0	5	0	0	0	0	0	0	.51	-0.041	.32	-0.02%	-0.46	-0.95	0.00	7b --- 0 out d2	7b 3 out d3
18	73	48	May 23	WSN		SDP	L,4-7	7-7		4	1.0	0	0	0	2	2	0	0	4.44	3.42	5	25	12	5	2	0	1	0	0	0		0	0	1	0	0	3	0	0	0	0	0	0	.32	0.012	.18	0.00%	0.51	5.05	9.00	7t --- 0 out d4	7t 3 out d4
19	74	50	May 25	WSN		SDP	L,6-8	6-6		1	1.0	0	0	0	1	0	0	0	4.26	3.53	4	12	6	2	1	2	1	0	0	0		0	0	1	0	0	3	0	0	0	0	0	0	.36	0.016	.20	0.01%	0.51	1.65	3.00	6t --- 0 out d4	6t 3 out d4
20	75	52	May 27	WSN	@	KCR	W,4-2	5-6	W(3-2)	1	2.0	1	0	0	0	1	0	0	3.95	3.44	6	19	11	2	2	1	4	3	1	0		0	0	0	0	0	6	0	0	0	1	0	0	.92	0.109	.50	0.04%	1.03	9.90	15.00	5b --- 0 out d2	6b 3 out a2
21	76	55	May 30	WSN	@	LAD	L,3-9	8-GF(8)		2	1.0	3	3	3	0	0	1	1	4.76	4.00	6	13	9	2	1	3	2	0	0	0		0	0	0	0	0	5	0	0	0	1	0	0	.11	-0.026	.06	-0.01%	-2.46	-6.15	-6.00	8b --- 0 out d3	8b end d 6
Jun				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	Pit	Str	StL	StS	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	DFS(DK)	DFS(FD)	Entered	Exited
22	77	57	Jun 2	WSN		PHI	W,8-7	8-8	H(2)	2	0.1	1	1	0	1	0	0	0	4.71	4.09	3	11	7	1	0	0	2	1	0	0		0	0	0	0	0	2	0	0	0	0	0	0	2.85	-0.091	1.45	-0.03%	-0.41	-0.45	1.00	8t --- 0 out a1	8t 12- 1 out a1
23	78	59	Jun 4	WSN		PHI	L,3-11	7-8		1	1.1	1	0	0	1	0	0	1	4.50	4.26	6	26	14	6	2	2	2	2	0	0		0	0	0	0	0	4	0	0	0	1	0	0	.03	0.001	.01	0.00%	0.62	1.20	4.00	7t --- 2 out d7	8t 3 out d7
24	79	61	Jun 7	WSN		ARI	L,2-6	8-8		2	1.0	0	0	0	0	0	0	0	4.35	4.22	3	10	7	2	0	2	1	0	1	0		0	0	0	0	0	3	0	0	0	0	0	0	.39	0.029	.14	0.01%	0.51	2.25	3.00	8t --- 0 out d2	8t 3 out d2
25	80	62	Jun 9	WSN	@	ATL	L,2-3	6-6	H(3)	1	1.0	2	0	0	0	2	0	0	4.22	4.07	5	20	14	5	1	3	0	0	0	0		0	0	0	0	0	5	0	0	0	0	0	0	1.61	0.091	.51	0.02%	0.55	5.05	9.00	6b --- 0 out a1	6b 3 out a1
26	81	65	Jun 13	WSN	@	HOU	L,1-6	6-6		3	1.0	0	0	0	0	2	0	0	4.09	3.92	3	14	11	2	2	1	0	0	0	0		0	0	0	0	0	3	0	0	0	0	0	0	.39	0.030	.10	0.00%	0.51	6.25	9.00	6b --- 0 out d2	6b 3 out d2
27	82	67	Jun 15	WSN	@	HOU	W,4-1	6-7		1	1.1	0	0	0	0	1	0	0	3.93	3.84	4	13	10	4	0	1	2	0	1	0		2	0	0	0	0	4	0	0	0	0	0	0	1.50	0.153	.25	0.02%	0.95	5.00	7.00	6b 12- 2 out tie	7b 3 out tie
28	83	68	Jun 16	WSN		MIA	L,5-6	7-7		0	1.0	1	0	0	0	1	0	0	3.82	3.76	3	13	8	4	1	1	1	1	0	0		0	0	0	0	0	3	0	0	0	1	0	0	2.00	0.088	.41	0.01%	0.51	3.65	6.00	7t --- 0 out tie	7t 3 out tie
29	84	73	Jun 21	WSN		STL	W,3-0	7-7	H(4)	4	0.2	0	0	0	1	1	0	0	3.75	3.78	3	16	8	5	0	1	0	0	0	0		1	0	0	0	0	2	0	0	0	0	0	0	2.80	0.038	.13	0.00%	0.29	2.90	5.00	7t 1-- 0 out a2	7t -23 2 out a2
30	85	76	Jun 24	WSN	@	SDP	W,2-0	6-7	H(5)	2	1.2	0	0	0	0	3	0	0	3.58	3.60	4	25	15	3	5	0	1	0	1	0		1	0	0	1	0	4	0	0	0	0	0	0	1.27	0.160	.04	0.00%	1.02	9.75	14.00	6b 1-- 1 out a2	7b 3 out a2
31	86	77	Jun 25	WSN	@	SDP	W,8-3	6-6	H(6)	0	0.2	0	0	0	3	0	0	0	3.52	3.83	5	22	8	4	0	0	2	0	1	0		0	0	0	0	0	2	0	0	0	0	0	0	2.39	-0.045	.09	0.00%	-0.27	-0.30	2.00	6b --- 0 out a2	6b 123 2 out a2
32	87	79	Jun 27	WSN	@	SEA	W,7-4	6-7		1	0.1	1	1	1	1	0	0	0	3.72	3.90	3	14	7	3	0	2	0	0	0	0		2	0	0	0	0	2	0	0	0	0	0	0	1.85	-0.162	.05	0.00%	-0.86	-2.45	-2.00	6b 1-3 2 out d1	7b 1-3 0 out tie
33	88	81	Jun 30	WSN	@	PHI	W,2-1	7-7	H(7)	2	0.2	1	0	0	0	2	0	0	3.66	3.79	3	14	9	5	2	0	1	1	0	0		0	0	0	0	0	3	1	0	0	0	0	0	2.37	0.035	.13	0.00%	0.19	4.90	8.00	7b --- 0 out a1	7b -2- 2 out a1
Jul				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	Pit	Str	StL	StS	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	DFS(DK)	DFS(FD)	Entered	Exited
34	89	83	Jul 2	WSN	@	PHI	W,5-4	7-7	H(8)	1	0.1	2	1	1	0	1	0	0	3.86	3.73	3	10	8	4	1	1	1	1	0	0		0	0	0	0	0	3	2	0	0	0	0	0	2.00	-0.185	.12	-0.01%	-1.18	-0.45	1.00	7b --- 0 out a2	7b -2- 1 out a1
35	90	87	Jul 6	WSN		CIN	L,4-5	2-4		3	2.2	1	1	1	1	0	0	0	3.83	3.77	9	31	14	4	0	5	3	0	0	0		1	0	0	0	0	8	0	0	0	0	0	0	.95	0.086	.03	0.00%	0.97	2.80	5.00	2t --3 1 out tie	4t 3 out d1
36	91	91	Jul 14 susp	WSN	@	STL	W,7-5	7-7		7	0.1	0	0	0	0	0	0	0	3.80	3.77	1	2	1	0	0	0	1	0	1	0		1	0	0	0	0	1	0	0	0	0	0	0	2.23	0.064	.03	0.00%	0.33	0.75	1.00	7b -2- 2 out tie	7b 3 out tie
37	92	94	Jul 17	WSN	@	CHC	W,7-5	7-8	H(9)	2	1.1	2	0	0	0	1	0	0	3.68	3.71	6	27	17	5	4	1	4	2	0	0		0	0	0	0	0	6	0	0	0	0	0	0	1.89	0.055	.02	0.00%	0.38	3.80	7.00	7b --- 1 out a2	8b 12- 2 out a2
38	93	96	Jul 19	WSN	@	CHC	L,3-8	8-8	L(3-3)	1	0.2	2	4	4	2	1	0	0	4.43	3.79	6	33	15	4	3	1	2	2	0	0		0	0	0	0	0	3	0	0	0	0	1	0	1.96	-0.260	.02	0.00%	-1.26	-6.90	-7.00	8b --- 0 out tie	8b 123 2 out d1
39	94	99	Jul 23	WSN		SFG	W,6-1	8-8		3	1.0	1	0	0	0	0	0	0	4.34	3.78	3	10	7	1	1	0	3	2	0	0		0	0	0	0	0	3	0	0	0	0	0	0	.38	0.012	.00	0.00%	0.51	1.65	3.00	8t --- 0 out a5	8t 3 out a5
40	95	103	Jul 27	WSN	@	NYM	L,1-2	8-8	BL(3-4)	3	0.1	3	2	2	0	0	0	1	4.70	3.84	5	21	11	3	2	2	2	0	0	0		0	0	0	0	0	4	0	0	0	0	0	0	3.25	-0.466	.07	-0.01%	-2.08	-5.65	-5.00	8b --- 0 out a1	8b 123 1 out tie
41	96	105	Jul 29	WSN	@	NYM	W,11-6	8-8		1	0.1	1	0	0	1	1	0	0	4.66	3.86	3	13	7	2	1	0	1	0	0	0		0	0	0	0	0	2	0	0	0	0	0	0	.86	-0.043	.01	0.00%	-0.69	1.55	4.00	8b --- 0 out a4	8b 1-3 1 out a4
42	97	107	Jul 31	WSN		MIL	W,5-3	8-8	H(10)	1	1.0	1	0	0	0	0	0	0	4.56	3.85	3	5	3	0	0	3	0	0	0	0		0	0	0	0	0	3	0	0	0	1	0	0	1.53	0.075	.01	0.00%	0.51	1.65	3.00	8t --- 0 out a2	8t 3 out a2
Aug				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	Pit	Str	StL	StS	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	DFS(DK)	DFS(FD)	Entered	Exited
43	98	125	Aug 20	WSN		PHI	W,4-3	9-9		19	0.2	2	2	2	0	0	0	0	4.88	3.84	4	16	10	3	0	3	1	0	0	0		0	0	0	0	0	4	0	0	0	0	0	0	.27	0.003	.01	0.00%	-0.72	-3.70	-4.00	9t --- 0 out a4	9t 1-- 2 out a3
44	99	126	Aug 22	WSN	@	NYY	W,2-1	7-7	W(4-4)	1	1.0	1	0	0	0	0	0	0	4.78	3.83	4	11	9	0	2	3	1	0	0	0		0	0	0	0	0	4	0	0	0	0	0	0	1.24	0.089	.05	0.00%	0.52	5.65	9.00	7b --- 0 out tie	7b 3 out tie
45	100	129	Aug 25	WSN	@	MIA	W,7-4	7-7		2	0.0	5	4	4	0	0	0	0	5.51	3.83	5	16	12	2	0	3	2	1	0	0		0	0	0	0	0	5	1	1	0	0	0	0	.94	-0.280	.03	-0.01%	-4.35	-11.00	-12.00	7b --- 0 out a6	7b 1-3 0 out a3
46	101	131	Aug 27	WSN	@	MIA	L,1-2	8-GF(8)		1	1.0	1	0	0	0	0	0	0	5.40	3.82	4	17	10	2	0	2	2	1	0	0		0	0	0	0	0	4	0	0	0	0	0	0	.46	0.034	.03	0.00%	0.54	1.65	3.00	8b --- 0 out d1	8b end d 1
47	102	133	Aug 29	WSN	@	TOR	W,5-4	6-7		1	1.2	1	1	1	1	2	0	0	5.40	3.78	7	23	15	8	1	3	1	0	0	0		0	0	1	0	0	6	1	0	0	0	0	0	.79	0.006	.02	0.00%	-0.31	4.55	8.00	6b --- 0 out a4	7b -2- 2 out a3
Sept				Tm		Opp	Rslt	Inngs	Dec	DR	IP	H	R	ER	BB	SO	HR	HBP	ERA	FIP	BF	Pit	Str	StL	StS	GB	FB	LD	PU	Unk	GSc	IR	IS	SB	CS	PO	AB	2B	3B	IBB	GDP	SF	ROE	aLI	WPA	acLI	cWPA	RE24	DFS(DK)	DFS(FD)	Entered	Exited
48	103	136	Sep 1	WSN		MIA	L,5-8	11-GF(11)		2	0.2	1	1	1	0	0	1	0	5.50	4.02	3	11	6	0	1	2	1	0	0	0		1	1	0	0	0	3	0	0	0	0	0	0	.56	-0.123	.01	0.00%	-1.31	-1.10	-1.00	11t -2- 1 out d2	11t end d 4
49	104	140	Sep 6	WSN		NYM	W,3-2	7-7		4	0.2	0	0	0	0	0	0	0	5.43	4.01	2	9	5	2	1	2	0	0	0	0		0	0	0	0	0	2	0	0	0	0	0	0	.39	0.020	.00	0.00%	0.27	1.50	2.00	7t --- 1 out d2	7t 3 out d2
50	105	141	Sep 8	WSN		LAD	L,5-8	5-5		1	0.1	1	0	0	2	1	0	0	5.40	4.08	4	17	7	1	2	1	0	0	0	0		0	0	0	0	0	2	1	0	0	0	0	0	1.42	-0.099	.00	0.00%	-1.08	0.95	4.00	5t --- 0 out d1	5t 123 1 out d1
51	106	143	Sep 10	WSN		LAD	L,3-7	5-6		1	0.2	3	1	1	0	1	0	0	5.50	4.03	5	19	13	2	2	0	4	3	0	0		3	2	0	0	0	4	1	0	0	0	1	0	.89	-0.101	.00	0.00%	-2.04	-0.30	2.00	5t 123 1 out d2	6t -2- 0 out d5
							25-26		W-L:4-4,Sv:1,BSv:3,Hld:10	1.9	54.0	62	35	33	22	44	4	4	5.50	4.03	240	895	62%	18%	9%	1.02		22%	6%	0		22	27%	6	2	0	211	10	2	0	6	2	1	1.08	-1.207	.33	-0.17%	-10.78	106.70	219.00

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