Mason Thompson

#71 - Relief Pitcher

Washington Nationals

Bats / Throws	Right / Right
Date of Birth	2/20/1998 (25)
Height, Weight	6'6", 236 lb
Hometown	Round Rock, TX

2023 Season Stats

MLB Rank MLB Average

	Sv	IP	ERA	WHIP	K%	BB%	CSW%
	1	31.0	3.77	1.23	18.5%	7.7%	29.4%

	62^nd 1 Sv	16^th 18 IP	171^st 4.48 ERA	139^th 1.39 WHIP	261^st 23.5% K%	107^th 10.2% BB%	167^th 29.3% CSW%

	FB MPH	SwStr%	HC%	GB%	PLV	xERA
	94.2	11.3%	24.6%	50.5%	4.94	4.44

	99^th 93.5 FB MPH	203^rd 12.3% SwStr%	168^th 25.1% HC%	104^th 45.7% GB%	246^th 5.06 PLV	205^th 4.41 xERA

Articles

6/8/2023Fantasy Baseball Relief Pitcher Rankings - 6/8/23 Depth ChartNate Kosher

6/7/2023Fantasy Baseball Relief Pitcher Rankings - 6/7/23 Depth ChartJohn Wallace

6/6/2023Fantasy Baseball Relief Pitcher Rankings - 6/6/23 Depth ChartBenjamin Haller

6/3/2023Fantasy Baseball Relief Pitcher Rankings - 6/2/23 Depth ChartEthan McCollister

5/31/2023Fantasy Baseball Relief Pitcher Rankings - 5/31/23 Depth ChartJohn Wallace

See More Articles

Stats Glossary

Overview

Show 2023 MLB Percentile | Show 2023 MLB Average

Year	Team	G	GS	IP	W	L	ERA	xERA	FIP	xFIP	WHIP	H/9	K%	BB%	BABIP	HC%	GB%	HR/9	HR/FB%	LOB%	SwStr%	CSW%	PLV
2021	WSH/SD	31	0	24.2	1	3	4.01	5.36	5.41	4.94	1.91	11.7	19.0%	12.4%	.368	28.9%	53.7%	1.46	19.0%	77.8%	9.2%	25.5%	4.65
2022	WSH	24	0	24.2	1	1	2.92	3.31	4.19	4.62	1.14	6.9	15.0%	8.0%	.233	25.0%	55.3%	0.73	9.1%	80.2%	12.0%	26.1%	4.75
2023	WSH	24	0	31.0	3	2	3.77	4.44	4.26	4.37	1.23	8.1	18.5%	7.7%	.281	24.6%	50.5%	0.87	12.5%	65.2%	11.3%	29.4%	4.94
RP MLB Percentile		71	0	94	88	10	50	41	47	42	59	49	24	68	60	51	70	53	45	27	40	51	28
RP MLB AVG		16	0	18.0	1	1	4.48	4.41	4.36	4.25	1.39	8.5	23.5%	10.2%	.294	25.1%	45.7%	-	13.5%	72.2%	12.3%	29.3%	5.06
3 Years		79	0	80.1	5	6	3.59	-	-	-	1.41	8.9	17.7%	9.4%	.294	26.2%	53.0%	1.01	13.4%	74.0%	10.8%	27.1%	4.78

Repertoire

Sinker | 57%
Slider | 28%
Curveball | 8%
Four-Seamer | 7%
Changeup | 0%
All Pitches

2021 2022 2023 All

Show 2023 MLB Percentile | Show 2023 MLB Average

Year	MPH	Usage%	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	GB%	FB%	AVG	wOBA	BABIP	HR/FB%	xAVG	xwOBA	HC%	Spin
2021	96.2	78.1%	23.7%	46.5%	6.0%	17.8%	23.9%	60.1%	52.6%	55.9%	23.5%	.309	.381	.344	18.8%	.281	.363	28.4%	2,219
2022	95.8	73.1%	32.1%	48.0%	8.9%	12.3%	21.2%	65.8%	59.1%	54.4%	29.4%	.243	.294	.258	5.0%	.241	.292	27.7%	2,247
2023	94.2	56.7%	25.6%	54.5%	6.6%	21.8%	28.4%	66.5%	57.6%	49.2%	23.8%	.338	.413	.339	20.0%	.343	.418	31.3%	2,115
RP MLB Percentile	54	87	46	67	44	57	49	50	38	27	62	28	28	38	41	24	21	47	42
RP MLB AVG	93.5	33.2%	27.6%	50.1%	7.5%	20.7%	28.2%	66.1%	59.5%	57.7%	21.5%	.290	.361	.315	15.1%	.283	.354	32.2%	2,138

Year	xAVG	xwOBA	xBABIP	xwoBACON	HC%	Brl%	ICR%	IPA%	EV	FB EV	LA	xMov	yMov	xRP	yRP	Ext	Spin
2021	.281	.363	.314	.369	28.4%	5.9%	33.8%	24.2%	84.3	80.2	5.7	9.0	6.1	-1.3	5.7	6.7	2,219
2022	.241	.292	.255	.271	27.7%	2.9%	29.4%	24.1%	85.9	86.9	10.6	10.0	6.6	-1.8	5.8	6.7	2,247
2023	.343	.418	.351	.402	31.3%	4.8%	38.1%	30.0%	85.9	76.6	6.9	10.3	4.4	-1.3	5.6	6.8	2,115
RP MLB Percentile	24	21	31	26	47	40	52	48	76	90	37	65	42	53	57	80	42
RP MLB AVG	.283	.354	.306	.355	32.2%	6.2%	40.4%	30.3%	88.9	87.2	3.1	9.5	4.7	-0.8	5.4	6.4	2,138

Year	P	TBF	1B	2B	3B	HR	K	BB	HBP	WP	Strikes	Balls	AVG	SLG	wOBA
2021	331	95	18	4	0	3	14	12	1	2	199	132	.309	.469	.381
2022	269	83	14	2	1	1	7	7	1	1	177	92	.243	.338	.294
2023	257	80	17	3	0	3	6	10	1	1	171	86	.338	.515	.413
RP MLB Percentile	96	98	0	4	8	0	79	1	7	1	95	4	28	28	28
RP MLB AVG	89	24	4	1	0	0	3	2	0	0	59	30	.290	.436	.361

Year	GB%	LD%	FB%	IFFB%	HR/FB%	Pull%	Cent%	Oppo%	Foul%	Weak%	Top%	Under%	Fl&B%	Solid%	SS%
2021	55.9%	20.6%	23.5%	8.8%	18.8%	44.1%	32.4%	23.5%	15.7%	13.2%	38.2%	14.7%	20.6%	7.4%	26.5%
2022	54.4%	16.2%	29.4%	8.8%	5.0%	36.8%	32.4%	30.9%	19.3%	7.4%	39.7%	23.5%	25.0%	1.5%	29.4%
2023	49.2%	27.0%	23.8%	6.3%	20.0%	25.4%	36.5%	38.1%	13.6%	9.5%	31.7%	20.6%	25.4%	7.9%	31.7%
RP MLB Percentile	27	29	62	77	41	26	55	70	24	76	25	70	45	23	50
RP MLB AVG	57.7%	20.8%	21.5%	4.6%	15.1%	35.2%	34.1%	30.7%	17.7%	5.9%	43.4%	15.1%	24.1%	5.3%	32.3%

Year	HC%	Brl%	ICR%	IPA%	AVG	wOBA	BABIP	BACON	xAVG	xwOBA	xBABIP	xwoBACON	EV	FB EV	LA
2021	28.4%	5.9%	33.8%	24.2%	.309	.381	.344	.373	.281	.363	.314	.369	84.3	80.2	5.7
2022	27.7%	2.9%	29.4%	24.1%	.243	.294	.258	.269	.241	.292	.255	.271	85.9	86.9	10.6
2023	31.3%	4.8%	38.1%	30.0%	.338	.413	.339	.371	.343	.418	.351	.402	85.9	76.6	6.9
RP MLB Percentile	47	40	52	48	28	28	38	35	24	21	31	26	76	90	37
RP MLB AVG	32.2%	6.2%	40.4%	30.3%	.290	.361	.315	.334	.283	.354	.306	.355	88.9	87.2	3.1

Year	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	Whiff%	Swing%	Con%	O-Con%	Z-Con%	ECS%	2-Str O-Sw%	F-Str%	TF-Str%
2021	23.7%	46.5%	6.0%	17.8%	23.9%	60.1%	52.6%	14.3%	42.3%	85.7%	76.2%	89.8%	19.0%	23.5%	58.5%	44.7%
2022	32.1%	48.0%	8.9%	12.3%	21.2%	65.8%	59.1%	16.7%	53.5%	83.3%	75.6%	86.9%	16.5%	22.7%	56.8%	40.5%
2023	25.6%	54.5%	6.6%	21.8%	28.4%	66.5%	57.6%	14.8%	44.7%	85.2%	86.7%	84.7%	27.1%	11.1%	71.1%	52.2%
RP MLB Percentile	46	67	44	57	49	50	38	43	46	44	29	66	66	10	69	56
RP MLB AVG	27.6%	50.1%	7.5%	20.7%	28.2%	66.1%	59.5%	16.3%	45.4%	83.7%	73.9%	88.1%	24.1%	26.7%	62.1%	49.9%

Year	aLoc%	x-mLoc%	gLoc%	hiLoc%	y-mLoc%	loLoc%	heLoc%	iLoc%	oLoc%	Early%	Behind%	2-Str%	Zone%	Early BIP%	PAR%
2021	49.2%	23.0%	27.8%	31.7%	29.0%	39.3%	10.3%	47.1%	29.9%	63.4%	21.1%	15.4%	46.5%	19.0%	27.5%
2022	49.4%	29.4%	21.2%	33.8%	30.1%	36.1%	8.2%	34.6%	36.1%	61.0%	14.5%	24.5%	48.0%	23.8%	10.6%
2023	42.4%	30.0%	27.6%	32.3%	28.0%	39.7%	7.8%	33.1%	37.0%	64.6%	17.9%	17.5%	54.5%	19.3%	13.3%
RP MLB Percentile	32	80	58	59	38	48	55	30	55	51	37	46	67	62	36
RP MLB AVG	50.1%	24.6%	25.3%	29.7%	29.9%	40.4%	7.5%	41.2%	34.2%	64.5%	16.7%	18.8%	50.1%	17.3%	18.6%

Year	P	PLV	Total PLV	QP%	AP%	BP%	Q-BP%	HP	PLA	Hit Luck
2021	331	4.62	1,531	38.7%	21.8%	39.6%	-0.9%	2.9	5.69	+4
2022	269	4.61	1,139	36.8%	21.1%	42.1%	-5.3%	-0.7	4.22	+3
2023	257	4.91	1,263	45.5%	19.8%	34.6%	10.9%	6.5	3.49	+8
RP MLB Percentile	96	46	94	48	56	53	53	1	-	0
RP MLB AVG	89	4.90	440	44.7%	18.5%	36.8%	7.9%	0.5	-	+1

Year	MPH	Usage%	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	GB%	FB%	AVG	wOBA	BABIP	HR/FB%	xAVG	xwOBA	HC%	Spin
2021	83.8	13.7%	40.9%	24.1%	29.3%	13.8%	43.1%	56.9%	48.3%	16.7%	50.0%	.333	.368	.800	33.3%	.219	.273	33.3%	2,244
2022	84.4	23.6%	32.7%	43.7%	21.8%	20.7%	42.5%	62.1%	60.9%	71.4%	14.3%	.067	.173	.000	100.0%	.144	.237	12.5%	2,199
2023	84.5	27.6%	42.3%	43.2%	18.4%	14.4%	32.8%	68.8%	65.6%	60.9%	21.7%	.125	.130	.174	0.0%	.166	.172	12.1%	2,176
RP MLB Percentile	52	38	90	63	72	44	61	86	92	82	22	78	86	76	54	69	83	75	17
RP MLB AVG	84.1	32.5%	28.6%	40.5%	14.1%	15.3%	29.5%	59.5%	54.3%	41.0%	36.8%	.234	.294	.291	12.9%	.227	.291	21.6%	2,404

Year	xAVG	xwOBA	xBABIP	xwoBACON	HC%	Brl%	ICR%	IPA%	EV	FB EV	LA	xMov	yMov	xRP	yRP	Ext	Spin
2021	.219	.273	.459	.682	33.3%	16.7%	66.7%	26.7%	99.6	96.6	21.8	2.0	-1.1	-1.7	5.6	6.7	2,244
2022	.144	.237	.195	.442	12.5%	14.3%	14.3%	6.3%	83.4	72.1	11.0	1.7	-0.7	-2.2	5.7	6.5	2,199
2023	.166	.172	.227	.216	12.1%	0.0%	17.4%	12.1%	84.0	86.7	3.3	1.9	-0.1	-1.7	5.6	6.7	2,176
RP MLB Percentile	69	83	63	81	75	53	94	92	73	55	87	29	27	42	42	75	17
RP MLB AVG	.227	.291	.272	.358	21.6%	6.9%	39.9%	26.9%	86.7	86.6	15.2	3.9	1.1	-0.9	5.6	6.3	2,404

Year	P	TBF	1B	2B	3B	HR	K	BB	HBP	WP	Strikes	Balls	AVG	SLG	wOBA
2021	58	15	4	0	0	1	9	0	0	0	33	25	.333	.533	.368
2022	87	16	0	0	0	1	8	1	0	0	54	33	.067	.267	.173
2023	125	33	4	0	0	0	9	0	1	1	86	39	.125	.125	.130
RP MLB Percentile	75	77	18	52	5	40	71	59	6	7	79	33	78	85	86
RP MLB AVG	84	21	3	1	0	1	6	1	0	0	52	32	.234	.387	.294

Year	GB%	LD%	FB%	IFFB%	HR/FB%	Pull%	Cent%	Oppo%	Foul%	Weak%	Top%	Under%	Fl&B%	Solid%	SS%
2021	16.7%	33.3%	50.0%	16.7%	33.3%	66.7%	33.3%	0.0%	3.4%	0.0%	0.0%	33.3%	50.0%	0.0%	66.7%
2022	71.4%	14.3%	14.3%	14.3%	100.0%	71.4%	14.3%	14.3%	11.5%	14.3%	57.1%	14.3%	0.0%	0.0%	14.3%
2023	60.9%	17.4%	21.7%	4.3%	0.0%	39.1%	30.4%	30.4%	17.6%	4.3%	56.5%	21.7%	13.0%	4.3%	26.1%
RP MLB Percentile	82	60	22	40	54	29	43	74	75	63	88	34	75	45	72
RP MLB AVG	41.0%	22.2%	36.8%	10.8%	12.9%	47.1%	31.9%	21.0%	14.2%	4.7%	29.6%	29.0%	23.9%	5.9%	35.9%

Year	HC%	Brl%	ICR%	IPA%	AVG	wOBA	BABIP	BACON	xAVG	xwOBA	xBABIP	xwoBACON	EV	FB EV	LA
2021	33.3%	16.7%	66.7%	26.7%	.333	.368	.800	.833	.219	.273	.459	.682	99.6	96.6	21.8
2022	12.5%	14.3%	14.3%	6.3%	.067	.173	.000	.143	.144	.237	.195	.442	83.4	72.1	11.0
2023	12.1%	0.0%	17.4%	12.1%	.125	.130	.174	.174	.166	.172	.227	.216	84.0	86.7	3.3
RP MLB Percentile	75	53	94	92	78	86	76	83	69	83	63	81	73	55	87
RP MLB AVG	21.6%	6.9%	39.9%	26.9%	.234	.294	.291	.320	.227	.291	.272	.358	86.7	86.6	15.2

Year	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	Whiff%	Swing%	Con%	O-Con%	Z-Con%	ECS%	2-Str O-Sw%	F-Str%	TF-Str%
2021	40.9%	24.1%	29.3%	13.8%	43.1%	56.9%	48.3%	68.0%	43.1%	32.0%	22.2%	57.1%	23.5%	45.8%	23.5%	23.5%
2022	32.7%	43.7%	21.8%	20.7%	42.5%	62.1%	60.9%	52.8%	41.4%	47.2%	25.0%	65.0%	28.8%	21.9%	60.9%	52.2%
2023	42.3%	43.2%	18.4%	14.4%	32.8%	68.8%	65.6%	33.8%	54.4%	66.2%	36.7%	89.5%	19.3%	31.6%	64.5%	54.8%
RP MLB Percentile	90	63	72	44	61	86	92	54	87	54	71	28	39	63	65	62
RP MLB AVG	28.6%	40.5%	14.1%	15.3%	29.5%	59.5%	54.3%	31.7%	44.2%	68.3%	47.3%	82.5%	21.4%	27.9%	56.4%	48.8%

Year	aLoc%	x-mLoc%	gLoc%	hiLoc%	y-mLoc%	loLoc%	heLoc%	iLoc%	oLoc%	Early%	Behind%	2-Str%	Zone%	Early BIP%	PAR%
2021	5.2%	22.4%	72.4%	6.9%	12.1%	81.0%	5.2%	17.2%	60.3%	58.6%	0.0%	41.4%	24.1%	2.9%	37.5%
2022	21.8%	23.0%	55.2%	17.2%	23.0%	59.8%	8.0%	24.1%	52.9%	59.8%	3.4%	36.8%	43.7%	3.8%	25.0%
2023	23.2%	20.8%	56.0%	10.4%	19.2%	70.4%	3.2%	28.8%	50.4%	66.4%	3.2%	30.4%	43.2%	15.7%	23.7%
RP MLB Percentile	65	43	44	26	39	74	24	63	49	76	78	36	63	70	62
RP MLB AVG	20.3%	22.3%	57.4%	17.5%	21.8%	60.7%	5.9%	25.3%	52.4%	59.1%	7.4%	33.5%	40.5%	12.4%	19.7%

Year	P	PLV	Total PLV	QP%	AP%	BP%	Q-BP%	HP	PLA	Hit Luck
2021	58	5.13	298	46.6%	10.3%	43.1%	3.4%	1.7	4.13	+2
2022	87	5.13	415	45.7%	23.5%	30.9%	14.8%	-1.7	3.07	-4
2023	125	5.20	650	47.2%	20.0%	32.8%	14.4%	-4.3	2.75	-3
RP MLB Percentile	75	43	75	44	42	44	44	98	-	96
RP MLB AVG	84	5.22	444	48.3%	22.5%	29.2%	19.1%	0.7	-	+1

Year	MPH	Usage%	O-Sw%	Zone%	SwStr%	CS%	CSW%	Str%	PLUS%	GB%	FB%	AVG	wOBA	BABIP	HR/FB%	xAVG	xwOBA	HC%	Spin
2021	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
2022	82.1	0.3%	100.0%	0.0%	0.0%	0.0%	0.0%	100.0%	100.0%	-	-	-	-	-	-	-	-	-	2,164
2023	80.4	8.0%	19.2%	27.8%	13.9%	19.4%	33.3%	44.4%	44.4%	50.0%	50.0%	.000