Sean Guenther

Bats L Throws L5'11" 194 lbBorn 1995 Atlanta, USADebut 2021Team DETDraft 2017 R7 #209 Miami Marlins, Notre Dame

Projections

Season	BF	K%	BB%	HR%	1B%	XBH%	PITCH+
2026	134	20.6	7.3	2.60	20.9	6.34	107.5
2027							106.8
2028							104.0

Projected rates are per plate appearance or batter faced; counting stats scale with projected playing time. Statcast measurements inform these projections as inputs and are reported as measurements, not projected.

Most similar through age 29

His ten closest age-29 comparables averaged 96 PITCH+ the next season; 6 of 10 played. Averages cover only the players who got a next season, which is why the played count matters.

#	Player	Through	PITCH+ then	Next season	Next PA / BF
1	Robert Stock	2019	103.5	89.8	62
2	Brian Shackelford	2006	102.6	did not play
3	Brandon Brennan	2021	105.5	did not play
4	Randy Flores	2005	107.8	92.4	196
5	DJ Johnson	2019	103.5	did not play
6	Mitch Stetter	2010	103.1	86.0	31
7	Garrett Cleavinger	2023	102.4	100.3	266
8	Bo Schultz	2015	103.9	101.3	68
9	Ryan Thompson	2021	104.6	107.3	181
10	Buddy Boshers	2017	104.4	did not play

Pitching

Year	Team	W	L	ERA	G	GS	SV	IP	BF	HR	BB	SO	PITCH+
2027 proj									134				106.8
2026*									0
2025	DET	0	1	5.23	9	1	0	10.3	43	0	5	8	105.2	100.9	106.1
2024	DET	3	0	0.86	17	0	0	21.0	73	0	2	12	145.7	96.2	141.9
2021	MIA	0	1	9.30	14	0	0	20.3	103	1	10	15	74.1	94.9	69.0
Career		3	2	5.05	40	1	0	51.7	219	1	17	35	104.1		100.6

Fielding

Year	Team	Pos	G	Inn	PO	A	Fld%	Runs saved
2025	DET	P	9	10	0	2	1.000	+0.0
2024	DET	P	17	21	1	1	1.000	-0.3
2021	MIA	P	14	20	2	1	1.000	-0.6

Runs saved covers the Statcast era; for catchers it includes framing.

Minor leagues

Year	Level	Team	Side	PA / BF	Line	AVG / ERA
2026	AAA	Toledo Mud Hens	Pit	70	16.2 IP, 21% K	5.56
2025	AAA	Toledo Mud Hens	Pit	20	5.0 IP, 20% K	3.60
2024	AAA	Toledo Mud Hens	Pit	222	51.2 IP, 23% K	3.34
2023	AAA	Toledo Mud Hens	Pit	136	31.1 IP, 27% K	4.92
2023	AA	Erie SeaWolves	Pit	45	11.1 IP, 31% K	1.62
2023	A	Lakeland Flying Tigers	Pit	27	8.0 IP, 41% K	1.12
2021	AAA	Jacksonville Jumbo Shrimp	Pit	93	22.2 IP, 30% K	4.86
2021	AA	Pensacola Blue Wahoos	Pit	66	17.2 IP, 39% K	1.05
2019	A+	Jupiter Hammerheads	Pit	168	42.1 IP, 26% K	2.57
2019	A	Clinton LumberKings	Pit	124	29.0 IP, 23% K	1.24
2018	A+	Jupiter Hammerheads	Pit	143	31.2 IP, 9% K	4.90
2018	A	Greensboro Grasshoppers	Pit	234	54.2 IP, 17% K	4.48
2017	Rk	GCL Marlins	Pit	42	11.0 IP, 26% K	0.82

Splits

Year	vs LHP	vs RHP	Home	Away
2025	0.443	0.229	0.285	0.463
2024	0.168	0.192	0.167	0.192
2021	0.478	0.360	0.365	0.454

wOBA by split, from pitch level data, 2015 on. For pitchers the split is the batter side faced.

Postseason pitching

Year	W	L	ERA	G	GS	SV	IP	H	HR	BB	SO	WHIP
2024	1	0	3.00	4	0	0	3.0	2	0	1	0	1.00
Career	1	0	3.00	4	0	0	3.0	2	0	1	0	1.00