Sean Guenther
Sean McManus Guenther
Born: December 29, 1995
Atlanta, GA US
Primary Position: Pitcher
Bats: Left
Throws: Left
Height: 5'11"
Weight: 194
Draft: Round 7 (2017 June Amateur Draft, Miami Marlins)
School: Notre Dame
Career: 2017-2025
Major League Statistics
Sean Guenther compiled a career record of 21 wins and 18 losses and a 3.39 ERA in his 180-game pitching career with the Marlins, Batavia Muckdogs, Greensboro Grasshoppers, Jupiter Hammerheads, Clinton LumberKings, Jacksonville Jumbo Shrimp, Pensacola Blue Wahoos, Lakeland Flying Tigers, Toledo Mud Hens, Erie SeaWolves and West Michigan Whitecaps. He began playing during the 2017 season and last took the field during the 2025 campaign.
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Pitching:
| Year | Level | Lg | Team | W | L | W% | ERA | G | GS | GF | CG | SHO | SV | IP | H | R | ER | HR | BB | IBB | SO | HBP | BK | WP | BF |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | Short Season A | NYPL | Batavia Muckdogs | 1 | 4 | .200 | 3.82 | 9 | 9 | 0 | 0 | 0 | 0 | 40.0 | 43 | 18 | 17 | 3 | 4 | 0 | 33 | 3 | 0 | 2 | 167 |
| 2017 | R | GULF | Marlins | 0 | 0 | 0.82 | 4 | 3 | 0 | 0 | 0 | 0 | 11.0 | 5 | 1 | 1 | 0 | 1 | 0 | 11 | 1 | 0 | 0 | 42 | |
| 2018 | R | GULF | Marlins | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 2.0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 7 | |
| 2018 | Advanced A | FLOR | Jupiter Hammerheads | 0 | 1 | .000 | 4.83 | 7 | 7 | 0 | 0 | 0 | 0 | 31.7 | 48 | 22 | 17 | 5 | 3 | 0 | 13 | 2 | 0 | 1 | 143 |
| 2018 | A | SALL3 | Greensboro Grasshoppers | 4 | 3 | .571 | 4.45 | 13 | 8 | 2 | 1 | 1 | 0 | 54.7 | 65 | 37 | 27 | 3 | 5 | 0 | 40 | 2 | 0 | 0 | 234 |
| 2019 | A | MIDW | Clinton LumberKings | 2 | 2 | .500 | 1.24 | 12 | 1 | 3 | 0 | 0 | 0 | 29.0 | 25 | 6 | 4 | 1 | 10 | 0 | 28 | 0 | 0 | 2 | 124 |
| 2019 | Advanced A | FLOR | Jupiter Hammerheads | 3 | 1 | .750 | 2.55 | 23 | 2 | 7 | 0 | 0 | 1 | 42.3 | 31 | 14 | 12 | 4 | 6 | 0 | 44 | 2 | 0 | 2 | 168 |
| 2021 | AAA | AAAE | Jacksonville Jumbo Shrimp | 3 | 1 | .750 | 4.76 | 15 | 1 | 3 | 0 | 0 | 1 | 22.7 | 21 | 15 | 12 | 2 | 4 | 0 | 28 | 2 | 0 | 0 | 93 |
| 2021 | AA | AASO | Pensacola Blue Wahoos | 1 | 0 | 1.000 | 1.02 | 11 | 0 | 1 | 0 | 0 | 0 | 17.7 | 11 | 3 | 2 | 1 | 3 | 0 | 26 | 1 | 0 | 1 | 66 |
| 2023 | AAA | IL | Toledo Mud Hens | 2 | 1 | .667 | 4.88 | 25 | 3 | 5 | 0 | 0 | 0 | 31.3 | 31 | 19 | 17 | 8 | 9 | 0 | 37 | 3 | 0 | 2 | 136 |
| 2023 | A | FLOR | Lakeland Flying Tigers | 0 | 0 | 1.12 | 6 | 3 | 0 | 0 | 0 | 0 | 8.0 | 4 | 1 | 1 | 0 | 1 | 0 | 11 | 0 | 0 | 0 | 27 | |
| 2023 | AA | EL | Erie SeaWolves | 0 | 0 | 1.59 | 8 | 0 | 0 | 0 | 0 | 0 | 11.3 | 9 | 2 | 2 | 1 | 2 | 0 | 14 | 0 | 0 | 0 | 45 | |
| 2024 | AAA | IL | Toledo Mud Hens | 4 | 4 | .500 | 3.31 | 39 | 2 | 11 | 0 | 0 | 3 | 51.7 | 51 | 28 | 19 | 4 | 15 | 0 | 52 | 1 | 0 | 1 | 222 |
| 2025 | A | FLOR | Lakeland Flying Tigers | 0 | 0 | 9.00 | 1 | 0 | 0 | 0 | 0 | 0 | 1.0 | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 4 | |
| 2025 | Advanced A | MIDW | West Michigan Whitecaps | 0 | 0 | 9.00 | 2 | 1 | 0 | 0 | 0 | 0 | 2.0 | 4 | 2 | 2 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 10 | |
| 2025 | AAA | IL | Toledo Mud Hens | 1 | 1 | .500 | 3.60 | 4 | 0 | 0 | 0 | 0 | 0 | 5.0 | 3 | 2 | 2 | 0 | 2 | 0 | 4 | 0 | 0 | 0 | 20 |
| Totals | 21 | 18 | .538 | 3.39 | 180 | 40 | 32 | 1 | 1 | 5 | 361.3 | 353 | 171 | 136 | 33 | 65 | 0 | 346 | 17 | 0 | 11 | 1508 |
Fielding:
| Year | Level | Lg | Team | Pos | GP | PO | A | E | DP | Fld% | RF/G |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | Short Season A | NYPL | Batavia Muckdogs | P | 9 | 3 | 2 | 0 | 0 | 1.000 | .556 |
| 2017 | R | GULF | Marlins | P | 4 | 1 | 2 | 0 | 0 | 1.000 | .750 |
| 2018 | Advanced A | FLOR | Jupiter Hammerheads | P | 7 | 0 | 6 | 1 | 1 | .857 | .857 |
| 2018 | A | SALL3 | Greensboro Grasshoppers | P | 13 | 2 | 7 | 0 | 0 | 1.000 | .692 |
| 2018 | R | GULF | Marlins | P | 1 | 0 | 0 | 0 | 0 | .000 | |
| 2019 | Advanced A | FLOR | Jupiter Hammerheads | P | 23 | 2 | 1 | 0 | 0 | 1.000 | .130 |
| 2019 | A | MIDW | Clinton LumberKings | P | 12 | 1 | 3 | 0 | 0 | 1.000 | .333 |
| 2021 | AAA | AAAE | Jacksonville Jumbo Shrimp | P | 15 | 0 | 4 | 0 | 0 | 1.000 | .267 |
| 2021 | AA | AASO | Pensacola Blue Wahoos | P | 11 | 2 | 2 | 0 | 0 | 1.000 | .364 |
| 2023 | AA | EL | Erie SeaWolves | P | 8 | 0 | 1 | 0 | 0 | 1.000 | .125 |
| 2023 | A | FLOR | Lakeland Flying Tigers | P | 6 | 1 | 3 | 0 | 0 | 1.000 | .667 |
| 2023 | AAA | IL | Toledo Mud Hens | P | 25 | 4 | 0 | 1 | 0 | .800 | .160 |
| 2024 | AAA | IL | Toledo Mud Hens | P | 39 | 3 | 12 | 1 | 0 | .938 | .385 |
| 2025 | AAA | IL | Toledo Mud Hens | P | 4 | 1 | 0 | 0 | 0 | 1.000 | .250 |
| 2025 | Advanced A | MIDW | West Michigan Whitecaps | P | 2 | 0 | 0 | 0 | 0 | .000 | |
| 2025 | A | FLOR | Lakeland Flying Tigers | P | 1 | 1 | 0 | 0 | 0 | 1.000 | 1.000 |
| Totals | 180 | 21 | 43 | 3 | 1 | .955 | .356 |
Minor League Service:
| Year | Level | League | Team | Affiliation | First Appearance | Final Appearance |
|---|---|---|---|---|---|---|
| 2017 | R | Gulf Coast League | Marlins | MIA | July 2, 2017 | July 16, 2017 |
| 2017 | Short Season A | New York-Pennsylvania League | Batavia Muckdogs | MIA | July 21, 2017 | September 5, 2017 |
| 2018 | Advanced A | Florida State League | Jupiter Hammerheads | MIA | April 8, 2018 | May 12, 2018 |
| 2018 | R | Gulf Coast League | Marlins | MIA | June 23, 2018 | June 23, 2018 |
| 2018 | A | South Atlantic League | Greensboro Grasshoppers | MIA | June 27, 2018 | September 1, 2018 |
| 2019 | A | Midwest League | Clinton LumberKings | MIA | April 5, 2019 | May 22, 2019 |
| 2019 | Advanced A | Florida State League | Jupiter Hammerheads | MIA | May 26, 2019 | August 25, 2019 |
| 2021 | AA | AA South | Pensacola Blue Wahoos | MIA | May 5, 2021 | June 5, 2021 |
| 2021 | AAA | AAA East | Jacksonville Jumbo Shrimp | MIA | June 9, 2021 | July 29, 2021 |
| 2023 | A | Florida State League | Lakeland Flying Tigers | DET | May 9, 2023 | May 28, 2023 |
| 2023 | AA | Eastern League | Erie SeaWolves | DET | June 1, 2023 | June 23, 2023 |
| 2023 | AAA | International League | Toledo Mud Hens | DET | June 28, 2023 | September 24, 2023 |
| 2024 | AAA | International League | Toledo Mud Hens | DET | March 29, 2024 | August 20, 2024 |
| 2025 | A | Florida State League | Lakeland Flying Tigers | DET | April 17, 2025 | April 17, 2025 |
| 2025 | AAA | International League | Toledo Mud Hens | DET | April 20, 2025 | May 28, 2025 |
| 2025 | Advanced A | Midwest League | West Michigan Whitecaps | DET | June 22, 2025 | June 25, 2025 |
Persons data from the Chadwick Baseball Bureau are Copyright Chadwick Baseball Bureau, and are made available under the Open Data Commons Attribution License.
