Ben Onyshko
Benjamin Albert Levasseur Onyshko
Born: October 18, 1996
Winnipeg, MB CA
Primary Position: Pitcher
Bats: Right
Throws: Left
Height: 6'2"
Weight: 205
Draft: Round 16 (2014 June Amateur Draft, Milwaukee Brewers)
Draft: Round 24 (2018 June Amateur Draft, Seattle Mariners)
School: Vauxhall (MB) HS
Stetson University
Career: 2018-2025
Ben Onyshko compiled a career record of 10 wins and 15 losses and a 4.29 ERA in his 236-game pitching career with the Mariners, Everett AquaSox, Modesto Nuts, West Virginia Power, Tacoma Rainiers, Arkansas Travelers, Winnipeg Goldeyes, Quintana Roo Tigres and Aguascalientes Rieleros. He began playing during the 2018 season and last took the field during the 2025 campaign.
 Modesto Nuts |
 Mariners |
 Everett AquaSox |
 West Virginia Power |
 Tacoma Rainiers |
 Arkansas Travelers |
 Winnipeg Goldeyes |
 Quintana Roo Tigres |
 Aguascalientes Rieleros |
Click on column headings to sort.
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018 | R | ARIZ | Mariners | 0 | 0 | 9.00 | 2 | 0 | 1 | 0 | 0 | 0 | 2.0 | 2 | 2 | 2 | 0 | 0 | 0 | 3 | 0 | 0 | 1 | 9 | |
| 2018 | Advanced A | CALL | Modesto Nuts | 0 | 0 | 0.00 | 1 | 0 | 0 | 0 | 0 | 0 | 2.0 | 2 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 7 | |
| 2018 | Short Season A | NORW | Everett AquaSox | 1 | 0 | 1.000 | 2.25 | 12 | 0 | 4 | 0 | 0 | 1 | 20.0 | 17 | 6 | 5 | 1 | 11 | 1 | 24 | 1 | 0 | 4 | 89 |
| 2019 | A | SALL3 | West Virginia Power | 3 | 4 | .429 | 3.99 | 38 | 1 | 11 | 0 | 0 | 2 | 70.0 | 77 | 43 | 31 | 4 | 24 | 0 | 82 | 15 | 0 | 9 | 319 |
| 2021 | AAA | AAAW | Tacoma Rainiers | 0 | 0 | 7.71 | 6 | 1 | 0 | 0 | 0 | 0 | 9.3 | 10 | 9 | 8 | 3 | 9 | 0 | 20 | 3 | 0 | 1 | 50 | |
| 2021 | Advanced A | HAWE | Everett AquaSox | 0 | 5 | .000 | 5.54 | 25 | 0 | 8 | 0 | 0 | 2 | 37.3 | 38 | 27 | 23 | 5 | 16 | 0 | 55 | 11 | 0 | 9 | 173 |
| 2022 | AA | TL | Arkansas Travelers | 3 | 2 | .600 | 4.36 | 43 | 0 | 8 | 0 | 0 | 0 | 53.7 | 48 | 32 | 26 | 9 | 27 | 0 | 44 | 13 | 0 | 5 | 242 |
| 2023 | AA | TL | Arkansas Travelers | 1 | 1 | .500 | 5.21 | 27 | 3 | 8 | 0 | 0 | 0 | 48.3 | 46 | 33 | 28 | 4 | 21 | 0 | 45 | 20 | 0 | 6 | 227 |
| 2024 | Ind | AA | Winnipeg Goldeyes | 1 | 0 | 1.000 | 1.03 | 30 | 0 | 10 | 0 | 0 | 0 | 43.7 | 26 | 6 | 5 | 3 | 12 | 0 | 47 | 4 | 0 | 1 | 170 |
| 2024 | AA | TL | Arkansas Travelers | 0 | 0 | 9.64 | 7 | 0 | 1 | 0 | 0 | 0 | 9.3 | 12 | 11 | 10 | 2 | 8 | 0 | 8 | 4 | 0 | 0 | 49 | |
| 2025 | Ind | MEX | Quintana Roo Tigres | 0 | 1 | .000 | 19.29 | 4 | 0 | 0 | 0 | 0 | 0 | 2.3 | 7 | 5 | 5 | 0 | 2 | 0 | 2 | 0 | 0 | 0 | 16 |
| 2025 | Ind | AA | Winnipeg Goldeyes | 1 | 2 | .333 | 3.51 | 34 | 0 | 12 | 0 | 0 | 1 | 33.3 | 28 | 16 | 13 | 4 | 12 | 3 | 29 | 6 | 0 | 1 | 145 |
| 2025 | Ind | MEX | Aguascalientes Rieleros | 0 | 0 | 7.71 | 7 | 0 | 0 | 0 | 0 | 0 | 4.7 | 6 | 4 | 4 | 1 | 5 | 1 | 3 | 2 | 0 | 0 | 24 | |
| Totals | 10 | 15 | .400 | 4.29 | 236 | 5 | 63 | 0 | 0 | 6 | 336.0 | 319 | 194 | 160 | 36 | 147 | 5 | 364 | 79 | 0 | 37 | 1520 |
Fielding:
| Year | Level | Lg | Team | Pos | GP | PO | A | E | DP | Fld% | RF/G |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2018 | R | ARIZ | Mariners | P | 2 | 0 | 0 | 0 | 0 | .000 | |
| 2018 | Short Season A | NORW | Everett AquaSox | P | 12 | 0 | 1 | 1 | 0 | .500 | .083 |
| 2018 | Advanced A | CALL | Modesto Nuts | P | 1 | 0 | 0 | 0 | 0 | .000 | |
| 2019 | A | SALL3 | West Virginia Power | P | 38 | 4 | 8 | 2 | 1 | .857 | .316 |
| 2021 | AAA | AAAW | Tacoma Rainiers | P | 6 | 0 | 1 | 0 | 0 | 1.000 | .167 |
| 2021 | Advanced A | HAWE | Everett AquaSox | P | 25 | 2 | 3 | 0 | 0 | 1.000 | .200 |
| 2022 | AA | TL | Arkansas Travelers | P | 43 | 2 | 9 | 3 | 1 | .786 | .256 |
| 2023 | AA | TL | Arkansas Travelers | P | 27 | 0 | 2 | 0 | 0 | 1.000 | .074 |
| 2024 | AA | TL | Arkansas Travelers | P | 7 | 0 | 2 | 0 | 0 | 1.000 | .286 |
| 2024 | Ind | AA | Winnipeg Goldeyes | P | 30 | 2 | 1 | 2 | 0 | .600 | .100 |
| 2025 | Ind | MEX | Aguascalientes Rieleros | P | 7 | 1 | 1 | 0 | 1 | 1.000 | .286 |
| 2025 | Ind | MEX | Quintana Roo Tigres | P | 4 | 0 | 1 | 0 | 0 | 1.000 | .250 |
| 2025 | Ind | AA | Winnipeg Goldeyes | P | 34 | 3 | 2 | 0 | 0 | 1.000 | .147 |
| Totals | 193 | 12 | 22 | 5 | 2 | .872 | .176 |
Minor League Service:
| Year | Level | League | Team | Affiliation | First Appearance | Final Appearance |
|---|---|---|---|---|---|---|
| 2018 | R | Arizona League | Mariners | SEA | July 4, 2018 | July 6, 2018 |
| 2018 | Advanced A | California League | Modesto Nuts | SEA | July 11, 2018 | July 11, 2018 |
| 2018 | Short Season A | Northwest League | Everett AquaSox | SEA | July 14, 2018 | September 2, 2018 |
| 2019 | A | South Atlantic League | West Virginia Power | SEA | April 5, 2019 | September 1, 2019 |
| 2021 | AAA | AAA West | Tacoma Rainiers | SEA | May 7, 2021 | May 23, 2021 |
| 2021 | Advanced A | High-A West | Everett AquaSox | SEA | June 11, 2021 | September 16, 2021 |
| 2022 | AA | Texas League | Arkansas Travelers | SEA | April 10, 2022 | September 18, 2022 |
| 2023 | AA | Texas League | Arkansas Travelers | SEA | April 8, 2023 | September 16, 2023 |
| 2024 | AA | Texas League | Arkansas Travelers | SEA | April 5, 2024 | May 12, 2024 |
| 2024 | Ind | American Association | Winnipeg Goldeyes | June 14, 2024 | September 2, 2024 | |
| 2025 | Ind | Mexican League | Aguascalientes Rieleros | April 18, 2025 | May 1, 2025 | |
| 2025 | Ind | Mexican League | Quintana Roo Tigres | May 7, 2025 | May 14, 2025 | |
| 2025 | Ind | American Association | Winnipeg Goldeyes | May 22, 2025 | September 1, 2025 |
Persons data from the Chadwick Baseball Bureau are Copyright Chadwick Baseball Bureau, and are made available under the Open Data Commons Attribution License.
