Hall of Fame Inductee
Retired
Masutaro Koyama
Nickname:
KicksBirthdate:
Oct. 16, 1997 (53 y, 11 m, 26 d)Born In:
Kakegawa, SHI, JPNNationality:
Japanese
Position:
PBats/Throws:
L/LHeight/Weight:
6'4"/277
Player Awards
| Award | Date | Team |
|---|---|---|
| Pitcher of the Year | 2028 | Irvine (BSA) |
| 2027 | Irvine (BSA) | |
| 2026 | Irvine (BSA) | |
| 2025 | Irvine (BSA) | |
| 2024 | Irvine (BSA) | |
| 2022 (2nd) | Irvine (BSA) | |
| 2021 | Irvine (BSA) | |
| All-Star | 2029 | Irvine (BSA) |
| 2028 | Irvine (BSA) | |
| 2027 | Irvine (BSA) | |
| 2026 | Irvine (BSA) | |
| 2025 | Irvine (BSA) | |
| 2024 | Irvine (BSA) | |
| 2021 | Irvine (BSA) | |
| League Champ | 2037 | Maui (BSA) |
| 2030 | Pocatello (BSA) | |
| 2026 | Irvine (BSA) | |
| Championship Series MVP | 2027 | Irvine (BSA) |
| Pitcher of the Month | May 2028 | Irvine (BSA) |
| Aug 2026 | Irvine (BSA) | |
| Oct 2025 | Irvine (BSA) | |
| Aug 2025 | Irvine (BSA) | |
| Jul 2025 | Irvine (BSA) | |
| Aug 2023 | Irvine (BSA) | |
| Sep 2021 | Irvine (BSA) | |
| Jul 2021 | Irvine (BSA) |
Hall of Fame Metrics
| Metric | Score |
|---|---|
| Black Ink | 86 |
| Grey Ink | 183 |
Similar Players (SP)
| Player | Score |
|---|---|
| Wang Yang | 879 |
| Dae-ho Kim | 857 |
| Mark Collins | 855 |
| Roland Martin | 822 |
| Jeffrey King | 815 |
| Hong-ryul Yun | 814 |
| Ramiro Jiménez | 791 |
| Cipriano Montáñez | 791 |
| Kevin Bush | 789 |
| Scott Hill | 789 |
Note: See Baseball Reference formula (primary position)
Leaderboard Appearances
| Year | GS | Rank |
|---|---|---|
| 2022 | 33 | 3 |
| 2024 | 33 | 10 |
| 2025 | 33 | 3 |
| 2026 | 34 | 4 |
| 2027 | 34 | 3 |
| 2028 | 34 | 3 |
| Year | W | Rank |
|---|---|---|
| 2021 | 18 | 3 |
| 2022 | 19 | 2 |
| 2024 | 18 | 4 |
| 2025 | 23 | 1 |
| 2026 | 23 | 1 |
| 2028 | 22 | 2 |
| 2029 | 17 | 6 |
| Year | Win % | Rank |
|---|---|---|
| 2021 | 0.818 | 1 |
| 2025 | 0.767 | 4 |
| 2026 | 0.852 | 2 |
| 2028 | 0.917 | 1 |
| 2029 | 0.810 | 4 |
| 2033 | 0.684 | 4 |
| 2035 | 0.800 | 3 |
| Year | IP | Rank |
|---|---|---|
| 2021 | 233.0 | 4 |
| 2022 | 255.1 | 1 |
| 2024 | 244.0 | 2 |
| 2025 | 248.2 | 1 |
| 2026 | 264.2 | 1 |
| 2027 | 269.1 | 1 |
| 2028 | 255.2 | 1 |
| Year | BF | Rank |
|---|---|---|
| 2022 | 993 | 2 |
| 2024 | 918 | 9 |
| 2025 | 936 | 3 |
| 2026 | 1008 | 1 |
| 2027 | 1026 | 2 |
| 2028 | 958 | 1 |
| Year | K | Rank |
|---|---|---|
| 2021 | 263 | 1 |
| 2022 | 286 | 1 |
| 2024 | 277 | 1 |
| 2025 | 316 | 1 |
| 2026 | 339 | 1 |
| 2027 | 300 | 1 |
| 2028 | 300 | 1 |
| 2029 | 203 | 6 |
| 2033 | 146 | 9 |
| Year | ERA | Rank |
|---|---|---|
| 2021 | 1.854 | 1 |
| 2022 | 2.608 | 3 |
| 2024 | 2.398 | 1 |
| 2025 | 2.099 | 1 |
| 2026 | 1.836 | 1 |
| 2027 | 2.339 | 2 |
| 2028 | 1.619 | 1 |
| 2029 | 2.556 | 3 |
| 2033 | 3.153 | 6 |
| 2036 | 3.129 | 5 |
| Year | BABIP | Rank |
|---|---|---|
| 2021 | 0.242 | 2 |
| 2024 | 0.263 | 5 |
| 2025 | 0.258 | 4 |
| 2028 | 0.238 | 1 |
| Year | WHIP | Rank |
|---|---|---|
| 2021 | 0.867 | 1 |
| 2022 | 0.979 | 5 |
| 2024 | 0.881 | 1 |
| 2025 | 0.808 | 1 |
| 2026 | 0.828 | 1 |
| 2027 | 0.928 | 2 |
| 2028 | 0.802 | 1 |
| 2029 | 1.028 | 5 |
| 2033 | 1.192 | 6 |
| Year | H/9 | Rank |
|---|---|---|
| 2021 | 5.601 | 1 |
| 2022 | 6.627 | 3 |
| 2024 | 6.123 | 1 |
| 2025 | 5.646 | 1 |
| 2026 | 6.257 | 1 |
| 2027 | 6.550 | 2 |
| 2028 | 5.456 | 1 |
| 2029 | 7.528 | 6 |
| 2033 | 8.390 | 8 |
| Year | BB/9 | Rank |
|---|---|---|
| 2026 | 1.190 | 5 |
| Year | CG | Rank |
|---|---|---|
| 2020 | 3 | 7 |
| 2021 | 3 | 9 |
| 2022 | 9 | 1 |
| 2023 | 4 | 4 |
| 2024 | 4 | 2 |
| 2025 | 3 | 5 |
| 2026 | 4 | 3 |
| 2027 | 6 | 3 |
| 2028 | 2 | 10 |
| 2029 | 5 | 5 |
| Year | SHO | Rank |
|---|---|---|
| 2020 | 3 | 1 |
| 2021 | 3 | 1 |
| 2022 | 4 | 1 |
| 2023 | 2 | 1 |
| 2024 | 3 | 1 |
| 2025 | 1 | 2 |
| 2026 | 2 | 3 |
| 2027 | 4 | 1 |
| 2028 | 2 | 1 |
| Year | BB (Low) | Rank |
|---|---|---|
| 2026 | 35 | 10 |
| 2029 | 37 | 9 |
| 2031 | 35 | 9 |
| 2035 | 34 | 9 |
| 2036 | 33 | 9 |
| Year | Hits (Low) | Rank |
|---|---|---|
| 2021 | 145 | 1 |
| 2024 | 166 | 5 |
| 2025 | 156 | 1 |
| 2028 | 155 | 2 |
| 2029 | 162 | 5 |
| 2033 | 165 | 4 |
| 2035 | 165 | 10 |
| 2036 | 171 | 7 |
| Year | HR (Low) | Rank |
|---|---|---|
| 2021 | 10 | 2 |
| 2024 | 16 | 8 |
| 2025 | 12 | 2 |
| 2026 | 7 | 1 |
| 2027 | 18 | 7 |
| 2028 | 16 | 7 |
| 2029 | 18 | 5 |
| 2031 | 13 | 3 |
| 2033 | 16 | 6 |
| Year | WAR | Rank |
|---|---|---|
| 2021 | 8.8 | 1 |
| 2022 | 8.6 | 2 |
| 2024 | 8.7 | 1 |
| 2025 | 10.7 | 1 |
| 2026 | 13.8 | 1 |
| 2027 | 9.4 | 1 |
| 2028 | 9.7 | 1 |
| 2029 | 5.7 | 7 |
| 2033 | 4.3 | 9 |
| Year | L (Low) | Rank |
|---|---|---|
| 2021 | 4 | 1 |
| 2025 | 7 | 7 |
| 2026 | 4 | 4 |
| 2028 | 2 | 1 |
| 2029 | 4 | 3 |
| 2033 | 6 | 4 |
| 2035 | 4 | 1 |
| 2036 | 5 | 5 |