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| Pitchers | Pos | Team | Age | DOB | POB | Nat. | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Bu, Shao-qi | SP | Mauna Loa Vulcans | 21 | 02/13/2021 | Taipei | TPE | Left | Right | 6' 2" | 180 lbs | - |
| Dau, Wanjala | SP | Mauna Loa Vulcans | 22 | 07/01/2020 | Nongoma | RSA | Left | Left | 6' 0" | 190 lbs | - |
| Lane, Robbie | SP | Mauna Loa Vulcans | 21 | 01/24/2021 | Burbank | USA | Right | Right | 6' 5" | 195 lbs | - |
| Martínez, Mike | SP | Mauna Loa Vulcans | 21 | 05/11/2021 | Caguas | PUR | Right | Right | 5' 11" | 155 lbs | - |
| McKinley, Blake | SP | Mauna Loa Vulcans | 21 | 01/30/2021 | San Antonio | USA | Left | Left | 6' 7" | 200 lbs | - |
| Torres, Jesús | SP | Mauna Loa Vulcans | 22 | 01/24/2020 | Santiago de Cuba | CUB | Left | Left | 6' 5" | 200 lbs | - |
| Wada, Yukichi | SP | Mauna Loa Vulcans | 21 | 01/25/2021 | Kashiwazaki | JPN | Right | Right | 5' 11" | 170 lbs | - |
| Lau, Jin-song | RP | Mauna Loa Vulcans | 21 | 05/24/2021 | Shulin | TPE | Switch | Right | 6' 7" | 200 lbs | - |
| Valentín, Mario | RP | Mauna Loa Vulcans | 21 | 11/09/2020 | Havana | CUB | Left | Left | 6' 4" | 185 lbs | - |
| Graham, Gary | CL | Mauna Loa Vulcans | 21 | 01/15/2021 | San Antonio | USA | Right | Right | 6' 2" | 190 lbs | - |
| Catchers | Pos | Team | Age | DOB | POB | Nat. | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Reed, Rob | C | Mauna Loa Vulcans | 21 | 05/10/2021 | Morristown | USA | Right | Right | 6' 7" | 210 lbs | - |
| Speck, Bernd | C | Mauna Loa Vulcans | 23 | 09/20/2019 | Willemstad | ANT | Right | Right | 6' 3" | 200 lbs | - |
| Infielders | Pos | Team | Age | DOB | POB | Nat. | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Martínez, Fernando | 2B | Mauna Loa Vulcans | 21 | 03/31/2021 | Valencia | VEN | Right | Right | 6' 2" | 185 lbs | - |
| Montalvo, Jorge | 2B | Mauna Loa Vulcans | 22 | 01/31/2020 | Cotuí | DOM | Left | Right | 6' 2" | 180 lbs | - |
| Salas, José | 2B | Mauna Loa Vulcans | 23 | 09/03/2019 | Fort Worth | USA | Right | Right | 6' 1" | 195 lbs | - |
| Maruyama, Ken | 3B | Mauna Loa Vulcans | 21 | 03/26/2021 | Morioka | JPN | Right | Right | 6' 1" | 185 lbs | - |
| Moss, Richard | 3B | Mauna Loa Vulcans | 21 | 02/24/2021 | Hawkinsville | USA | Right | Right | 6' 0" | 175 lbs | - |
| Raines, Ty | 3B | Mauna Loa Vulcans | 21 | 12/28/2020 | Brooklyn | USA | Right | Right | 6' 4" | 200 lbs | - |
| Ríos, Carlos | 3B | Mauna Loa Vulcans | 21 | 12/30/2020 | Tocumen | PAN | Right | Right | 6' 1" | 185 lbs | - |
| Desforges, Nicky | SS | Mauna Loa Vulcans | 22 | 04/01/2020 | Sutton Coldfield | ENG | Right | Right | 6' 0" | 175 lbs | - |
| Reed, Kenny | SS | Mauna Loa Vulcans | 21 | 01/18/2021 | Johnstown | USA | Left | Right | 6' 3" | 185 lbs | - |
| Outfielders | Pos | Team | Age | DOB | POB | Nat. | Bats | Throws | Height | Weight | Salary |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Braams, Cliff | LF | Mauna Loa Vulcans | 21 | 02/11/2021 | Huizen | NED | Left | Left | 6' 3" | 180 lbs | - |
| Casas, Adrián | LF | Mauna Loa Vulcans | 22 | 08/19/2020 | Rochester | USA | Right | Right | 6' 1" | 185 lbs | - |
| Martínez, Carlos | LF | Mauna Loa Vulcans | 21 | 05/09/2021 | Lake City | USA | Left | Left | 6' 5" | 200 lbs | - |
| Christian, Gary | CF | Mauna Loa Vulcans | 22 | 09/17/2020 | Alamo | USA | Left | Left | 6' 3" | 190 lbs | - |
| Griffin, Ray | CF | Mauna Loa Vulcans | 21 | 11/28/2020 | Hoffman Estates | USA | Switch | Right | 6' 1" | 180 lbs | - |
| Kouda, Motoki | CF | Mauna Loa Vulcans | 22 | 05/25/2020 | Oamishirasato | JPN | Left | Left | 6' 0" | 180 lbs | - |
