Koshiro Sakamoto
Koshiro Sakamoto
Born: September 9, 1994
Primary Position: Pitcher
Bats: Left
Throws: Left
Height: 5'10"
Weight: 165
Career: 2019-2025
Koshiro Sakamoto compiled a career record of 3 wins and 7 losses and a 5.66 ERA in his 115-game pitching career with the Tokyo Yakult Swallows, Yakult Swallows and Chiba Lotte Marines. He began playing during the 2019 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | Foreign Major | JPCL | Tokyo Yakult Swallows | 0 | 0 | 5.82 | 19 | 0 | 0 | 0 | 21.7 | 22 | 15 | 14 | 2 | 16 | 0 | 15 | 2 | 0 | 2 | 104 | |||
| 2020 | Foreign Major | JPCL | Yakult Swallows | 0 | 0 | 12.00 | 1 | 0 | 0 | 0 | 3.0 | 5 | 6 | 4 | 1 | 4 | 0 | 3 | 1 | 0 | 0 | 19 | |||
| 2021 | Foreign Major | JPCL | Yakult Swallows | 1 | 2 | .333 | 4.05 | 36 | 0 | 0 | 0 | 33.3 | 29 | 17 | 15 | 4 | 17 | 1 | 25 | 3 | 0 | 2 | 148 | ||
| 2022 | Foreign Major | JPPL | Chiba Lotte Marines | 0 | 0 | 4.15 | 7 | 0 | 0 | 0 | 8.7 | 9 | 4 | 4 | 3 | 1 | 0 | 6 | 0 | 0 | 0 | 34 | |||
| 2022 | Foreign Major | JPCL | Yakult Swallows | 0 | 1 | .000 | 9.28 | 7 | 0 | 0 | 0 | 10.7 | 15 | 14 | 11 | 4 | 9 | 0 | 11 | 1 | 0 | 2 | 59 | ||
| 2024 | Foreign Major | JPPL | Chiba Lotte Marines | 1 | 2 | .333 | 5.73 | 37 | 0 | 0 | 0 | 33.0 | 34 | 22 | 21 | 3 | 12 | 2 | 34 | 5 | 0 | 2 | 146 | ||
| 2025 | Foreign Major | JPPL | Chiba Lotte Marines | 1 | 2 | .333 | 6.35 | 8 | 0 | 0 | 0 | 5.7 | 6 | 4 | 4 | 0 | 4 | 0 | 3 | 2 | 0 | 0 | 28 | ||
| Totals | 3 | 7 | .300 | 5.66 | 115 | 0 | 0 | 0 | 0 | 0 | 116.0 | 120 | 82 | 73 | 17 | 63 | 3 | 97 | 14 | 0 | 8 | 538 |
Batting:
| Year | Level | Lg | Team | GP | PA | AB | R | H | 2B | 3B | HR | RBI | SB | CS | BB | SO | BA | OBP | SLG | OPS | TB | DP | HBP | SH | SF | IBB |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | Foreign Major | JPCL | Yakult Swallows | 7 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | .000 | .000 | .000 | .000 | 0 | 0 | 0 | 0 | 0 | 0 |
| Totals | 7 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | .000 | .000 | .000 | .000 | 0 | 0 | 0 | 0 | 0 | 0 |
Fielding:
| Year | Level | Lg | Team | Pos | GP | PO | A | E | DP | Fld% | RF/G |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | Foreign Major | JPCL | Tokyo Yakult Swallows | P | 19 | 0 | 1 | 0 | 0 | 1.000 | .053 |
| 2020 | Foreign Major | JPCL | Yakult Swallows | P | 1 | 0 | 0 | 1 | 0 | .000 | .000 |
| 2021 | Foreign Major | JPCL | Yakult Swallows | P | 36 | 1 | 4 | 0 | 0 | 1.000 | .139 |
| 2022 | Foreign Major | JPCL | Yakult Swallows | P | 7 | 0 | 1 | 0 | 0 | 1.000 | .143 |
| 2022 | Foreign Major | JPPL | Chiba Lotte Marines | P | 7 | 1 | 0 | 0 | 0 | 1.000 | .143 |
| 2024 | Foreign Major | JPPL | Chiba Lotte Marines | P | 37 | 0 | 5 | 0 | 0 | 1.000 | .135 |
| 2025 | Foreign Major | JPPL | Chiba Lotte Marines | P | 8 | 0 | 2 | 0 | 0 | 1.000 | .250 |
| Totals | 100 | 1 | 12 | 0 | 0 | 1.000 | .130 |
Minor League Service:
| Year | Level | League | Team | Affiliation | First Appearance | Final Appearance |
|---|---|---|---|---|---|---|
| 2019 | Foreign Major | Japan Central League | Tokyo Yakult Swallows | |||
| 2020 | Foreign Major | Japan Central League | Yakult Swallows | |||
| 2021 | Foreign Major | Japan Central | Yakult Swallows | |||
| 2022 | Foreign Major | Japan Central League | Yakult Swallows | |||
| 2022 | Foreign Major | Japan Pacific League | Chiba Lotte Marines | |||
| 2023 | Foreign Major | Japan Pacific League | Chiba Lotte Marines | |||
| 2024 | Foreign Major | Japan Pacific League | Chiba Lotte Marines | |||
| 2025 | Foreign Major | Japan Pacific League | Chiba Lotte Marines |
Persons data from the Chadwick Baseball Bureau are Copyright Chadwick Baseball Bureau, and are made available under the Open Data Commons Attribution License.
