Sean Guenther

Position: Relief Pitcher

Bats: Left • Throws: Left

5-11, 194lb (180cm, 87kg)

Born: December 29, 1995 in Atlanta, GA us

Draft: Drafted by the Miami Marlins in the 7th round of the 2017 MLB June Amateur Draft from University of Notre Dame (South Bend, IN).

High School: Marist School (Atlanta, GA)

School: University of Notre Dame (South Bend, IN)

Rookie Status: Exceeded rookie limits during 2021 season

2024 Contract Status: Not Updated

Full Name: Sean McManus Guenther

Nicknames: Gunny

Pronunciation: \gun-ther\

Twitter: @theGUENshow

Instagram: @guenthersean

View Player Info from the B-R Bullpen

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SUMMARY

2024

Career

WAR

1.0

0.3

ERA

0.86

5.01

21.0

41.1

WHIP

0.524

1.258

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Year	Age	AgeDif	Tm	Lg	Lev	Aff	W	L	W-L%	ERA	RA9	G	GS	GF	CG	SHO	SV	IP	H	R	ER	HR	BB	IBB	SO	HBP	BK	WP	BF	WHIP	H9	HR9	BB9	SO9	SO/W
2015	19	-1.4	Notre Dame	ACC	NCAA		1	3	.250	2.72	4.08	27	1			0	5	46.1	40	21	14	2	20	3	37	1	0	1	198	1.295	7.8	0.4	3.9	7.2	1.85
2016	20	-0.6	Notre Dame	ACC	NCAA		3	5	.375	4.62	5.42	15	11		0	0	1	78.0	85	47	40	6	21	1	47	4	0	2	337	1.359	9.8	0.7	2.4	5.4	2.24
2016	20	-0.1	Orleans	CCBL	Smr		2	3	.400	4.73	5.63	9	8	0	0	0	0	40.0	41	25	21	6	6	1	24	1	0	0	169	1.175	9.2	1.4	1.4	5.4	4.00
2017	21	0.4	Notre Dame	ACC	NCAA		2	6	.250	2.64	3.72	24	0		0	0	7	58.0	58	24	17	5	19	2	69	2	0	2	251	1.328	9.0	0.8	2.9	10.7	3.63
2017	21		2 Teams	2 Lgs	A--Rk	MIA	1	4	.200	3.18	3.35	13	12	0	0	0	0	51.0	48	19	18	3	5	0	44	4	0	2	209	1.039	8.5	0.5	0.9	7.8	8.80
2017	21	-0.3	Batavia	NYPL	A-	MIA	1	4	.200	3.83	4.05	9	9	0	0	0	0	40.0	43	18	17	3	4	0	33	3	0	2	167	1.175	9.7	0.7	0.9	7.4	8.25
2017	21	0.6	Marlins	GULF	Rk	MIA	0	0		0.82	0.82	4	3	0	0	0	0	11.0	5	1	1	0	1	0	11	1	0	0	42	0.545	4.1	0.0	0.8	9.0	11.00
2018	22		3 Teams	3 Lgs	A-A+-Rk	MIA	4	4	.500	4.48	6.01	21	15	2	1	1	0	88.1	113	59	44	8	8	0	55	4	0	1	384	1.370	11.5	0.8	0.8	5.6	6.88
2018	22	-1.0	Jupiter	FLOR	A+	MIA	0	1	.000	4.83	6.25	7	7	0	0	0	0	31.2	48	22	17	5	3	0	13	2	0	1	143	1.611	13.6	1.4	0.9	3.7	4.33
2018	22	0.1	Greensboro	SALL	A	MIA	4	3	.571	4.45	6.09	13	8	2	1	1	0	54.2	65	37	27	3	5	0	40	2	0	0	234	1.280	10.7	0.5	0.8	6.6	8.00
2018	22	1.6	Marlins	GULF	Rk	MIA	0	0		0.00	0.00	1	0	0	0	0	0	2.0	0	0	0	0	0	0	2	0	0	0	7	0.000	0.0	0.0	0.0	9.0
2019	23		2 Teams	2 Lgs	A+-A	MIA	5	3	.625	2.02	2.52	35	3	10	0	0	1	71.1	56	20	16	5	16	0	72	2	0	4	292	1.009	7.1	0.6	2.0	9.1	4.50
2019	23	0.1	Jupiter	FLOR	A+	MIA	3	1	.750	2.55	2.98	23	2	7	0	0	1	42.1	31	14	12	4	6	0	44	2	0	2	168	0.874	6.6	0.9	1.3	9.4	7.33
2019	23	1.1	Clinton	MIDW	A	MIA	2	2	.500	1.24	1.86	12	1	3	0	0	0	29.0	25	6	4	1	10	0	28	0	0	2	124	1.207	7.8	0.3	3.1	8.7	2.80

2021	25		2 Teams	2 Lgs	AAA-AA	MIA	4	1	.800	3.12	4.02	26	1	4	0	0	1	40.1	32	18	14	3	7	0	54	3	0	1	159	0.967	7.1	0.7	1.6	12.0	7.71
2021	25	-2.0	Jacksonville	AAAE	AAA	MIA	3	1	.750	4.76	5.96	15	1	3	0	0	1	22.2	21	15	12	2	4	0	28	2	0	0	93	1.103	8.3	0.8	1.6	11.1	7.00
2021	25	0.4	Pensacola	AASO	AA	MIA	1	0	1.000	1.02	1.53	11	0	1	0	0	0	17.2	11	3	2	1	3	0	26	1	0	1	66	0.792	5.6	0.5	1.5	13.2	8.67
2021	25	-3.9	MIA	NL	Maj	MIA	0	1	.000	9.30	9.74	14	0	2	0	0	0	20.1	31	22	21	1	10	1	15	2	0	2	103	2.016	13.7	0.4	4.4	6.6	1.50

2023	27		3 Teams	3 Lgs	AAA-AA-A	DET	2	1	.667	3.55	3.91	39	6	5	0	0	0	50.2	44	22	20	9	12	0	62	3	0	2	208	1.105	7.8	1.6	2.1	11.0	5.17
2023	27	0.1	Toledo	IL	AAA	DET	2	1	.667	4.88	5.46	25	3	5	0	0	0	31.1	31	19	17	8	9	0	37	3	0	2	136	1.277	8.9	2.3	2.6	10.6	4.11
2023	27	2.6	Erie	EL	AA	DET	0	0		1.59	1.59	8	0	0	0	0	0	11.1	9	2	2	1	2	0	14	0	0	0	45	0.971	7.1	0.8	1.6	11.1	7.00
2023	27	4.8	Lakeland	FLOR	A	DET	0	0		1.13	1.13	6	3	0	0	0	0	8.0	4	1	1	0	1	0	11	0	0	0	27	0.625	4.5	0.0	1.1	12.4	11.00
2024	28	1.0	Toledo	IL	AAA	DET	4	4	.500	3.31	4.88	39	2	11	0	0	3	51.2	51	28	19	4	15	0	52	1	0	1	222	1.277	8.9	0.7	2.6	9.1	3.47
2024	28	-1.0	DET	AL	Maj	DET	3	0	1.000	0.86	0.86	17	0	4	0	0	0	21.0	9	2	2	0	2	0	12	2	0	0	73	0.524	3.9	0.0	0.9	5.1	6.00
Year	Age	AgeDif	Tm	Lg	Lev	Aff	W	L	W-L%	ERA	RA9	G	GS	GF	CG	SHO	SV	IP	H	R	ER	HR	BB	IBB	SO	HBP	BK	WP	BF	WHIP	H9	HR9	BB9	SO9	SO/W
Majors (2 seasons)					Majors		3	1	.750	5.01	5.23	31	0	6	0	0	0	41.1	40	24	23	1	12	1	27	4	0	2	176	1.258	8.7	0.2	2.6	5.9	2.25
Minors (6 seasons)					Minors		20	17	.541	3.34	4.23	173	39	32	1	1	5	353.1	344	166	131	32	63	0	339	17	0	11	1474	1.152	8.8	0.8	1.6	8.6	5.38
College (3 seasons)					College		6	14	.300	3.50	4.54	66	12		0	0	13	182.1	183	92	71	13	60	6	153	7	0	5	786	1.333	9.0	0.6	3.0	7.6	2.55
Other (1 season)					Other		2	3	.400	4.73	5.63	9	8	0	0	0	0	40.0	41	25	21	6	6	1	24	1	0	0	169	1.175	9.2	1.4	1.4	5.4	4.00
All Levels (8 Seasons)							31	35	.470	3.59	4.48	279	59	38	1	1	18	617.0	608	307	246	52	141	8	543	29	0	18	2605	1.214	8.9	0.8	2.1	7.9	3.85

AAA (3 seasons)					Minors		9	6	.600	4.09	5.28	79	6	19	0	0	4	105.2	103	62	48	14	28	0	117	6	0	3	451	1.240	8.8	1.2	2.4	10.0	4.18
AA (2 seasons)					Minors		1	0	1.000	1.24	1.55	19	0	1	0	0	0	29.0	20	5	4	2	5	0	40	1	0	1	111	0.862	6.2	0.6	1.6	12.4	8.00
A+ (2 seasons)					Minors		3	2	.600	3.53	4.38	30	9	7	0	0	1	74.0	79	36	29	9	9	0	57	4	0	3	311	1.189	9.6	1.1	1.1	6.9	6.33
A (3 seasons)					Minors		6	5	.545	3.14	4.32	31	12	5	1	1	0	91.2	94	44	32	4	16	0	79	2	0	2	385	1.200	9.2	0.4	1.6	7.8	4.94
A- (1 season)					Minors		1	4	.200	3.83	4.05	9	9	0	0	0	0	40.0	43	18	17	3	4	0	33	3	0	2	167	1.175	9.7	0.7	0.9	7.4	8.25
Rk (2 seasons)					Minors		0	0		0.69	0.69	5	3	0	0	0	0	13.0	5	1	1	0	1	0	13	1	0	0	49	0.462	3.5	0.0	0.7	9.0	13.00