Koyo Aoyagi
Koyo Aoyagi
Born: December 11, 1993
, JP
Primary Position: Pitcher
Bats: Right
Throws: Right
Height: 5'11"
Weight: 174
Career: 2016-2025
Koyo Aoyagi compiled a career record of 54 wins and 46 losses and a 3.14 ERA in his 162-game pitching career with the Hanshin Tigers, Yakult Swallows, Reading Fightin Phils and Lehigh Valley IronPigs. He began playing during the 2016 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2016 | Foreign Major | JPCL | Hanshin Tigers | 4 | 5 | .444 | 3.29 | 13 | 0 | 0 | 0 | 68.3 | 41 | 31 | 25 | 1 | 40 | 0 | 52 | 8 | 0 | 2 | 289 | ||
| 2017 | Foreign Major | JPCL | Hanshin Tigers | 4 | 4 | .500 | 3.22 | 12 | 12 | 0 | 0 | 0 | 0 | 64.3 | 53 | 32 | 23 | 2 | 28 | 0 | 50 | 10 | 0 | 0 | 282 |
| 2018 | Foreign Major | JPCL | Hanshin Tigers | 1 | 1 | .500 | 3.32 | 4 | 0 | 0 | 0 | 21.7 | 23 | 8 | 8 | 1 | 6 | 0 | 22 | 0 | 0 | 1 | 93 | ||
| 2019 | Foreign Major | JPCL | Hanshin Tigers | 9 | 9 | .500 | 3.14 | 25 | 1 | 1 | 0 | 143.3 | 145 | 56 | 50 | 14 | 42 | 3 | 100 | 12 | 1 | 0 | 601 | ||
| 2020 | Foreign Major | JPCL | Hanshin Tigers | 7 | 9 | .438 | 3.36 | 21 | 1 | 0 | 0 | 120.7 | 111 | 51 | 45 | 4 | 44 | 3 | 88 | 5 | 0 | 2 | 510 | ||
| 2021 | Foreign Major | JPCL | Hanshin Tigers | 13 | 6 | .684 | 2.48 | 25 | 0 | 0 | 0 | 156.3 | 143 | 48 | 43 | 11 | 48 | 8 | 104 | 3 | 0 | 0 | 651 | ||
| 2022 | Foreign Major | JPCL | Hanshin Tigers | 13 | 4 | .765 | 2.05 | 24 | 4 | 2 | 0 | 162.3 | 126 | 46 | 37 | 7 | 32 | 4 | 132 | 8 | 0 | 0 | 644 | ||
| 2023 | Foreign Major | JPCL | Hanshin Tigers | 8 | 6 | .571 | 4.57 | 18 | 0 | 0 | 0 | 100.3 | 102 | 54 | 51 | 6 | 38 | 2 | 64 | 9 | 0 | 3 | 439 | ||
| 2024 | Foreign Major | JPCL | Hanshin Tigers | 2 | 3 | .400 | 3.69 | 12 | 0 | 0 | 0 | 61.0 | 66 | 31 | 25 | 2 | 21 | 1 | 35 | 6 | 1 | 1 | 269 | ||
| 2025 | AA | EL | Reading Fightin Phils | 1 | 2 | .333 | 6.91 | 4 | 4 | 0 | 0 | 0 | 0 | 14.3 | 10 | 11 | 11 | 4 | 15 | 0 | 12 | 3 | 0 | 1 | 66 |
| 2025 | Foreign Major | JPCL | Yakult Swallows | 0 | 2 | .000 | 8.10 | 3 | 0 | 0 | 0 | 13.3 | 14 | 12 | 12 | 3 | 11 | 0 | 9 | 3 | 0 | 0 | 65 | ||
| 2025 | AAA | IL | Lehigh Valley IronPigs | 0 | 1 | .000 | 7.45 | 19 | 2 | 6 | 0 | 0 | 0 | 19.3 | 21 | 19 | 16 | 2 | 23 | 0 | 16 | 4 | 0 | 1 | 106 |
| Totals | 54 | 46 | .540 | 3.14 | 162 | 18 | 6 | 6 | 3 | 0 | 845.0 | 753 | 345 | 295 | 51 | 310 | 19 | 620 | 62 | 2 | 8 | 3576 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2016 | Foreign Major | JPCL | Hanshin Tigers | 13 | 19 | 17 | 0 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 9 | .118 | .118 | .176 | .294 | 3 | 0 | 0 | 2 | 0 | 0 |
| 2017 | Foreign Major | JPCL | Hanshin Tigers | 12 | 22 | 21 | 0 | 2 | 1 | 0 | 0 | 2 | 0 | 0 | 0 | 7 | .095 | .095 | .143 | .238 | 3 | 0 | 0 | 1 | 0 | 0 |
| 2018 | Foreign Major | JPCL | Hanshin Tigers | 4 | 8 | 7 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | .143 | .250 | .143 | .393 | 1 | 0 | 1 | 0 | 0 | 0 |
| 2019 | Foreign Major | JPCL | Hanshin Tigers | 25 | 43 | 37 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 19 | .000 | .026 | .000 | .026 | 0 | 3 | 0 | 4 | 1 | 0 |
| 2020 | Foreign Major | JPCL | Hanshin Tigers | 21 | 39 | 31 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 19 | .032 | .062 | .032 | .095 | 1 | 0 | 0 | 7 | 0 | 0 |
| 2021 | Foreign Major | JPCL | Hanshin Tigers | 25 | 51 | 43 | 3 | 7 | 1 | 0 | 0 | 2 | 0 | 0 | 1 | 25 | .163 | .182 | .186 | .368 | 8 | 1 | 0 | 7 | 0 | 0 |
| 2022 | Foreign Major | JPCL | Hanshin Tigers | 24 | 54 | 50 | 2 | 7 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 26 | .140 | .157 | .140 | .297 | 7 | 1 | 0 | 3 | 0 | 0 |
| 2023 | Foreign Major | JPCL | Hanshin Tigers | 18 | 37 | 32 | 1 | 4 | 1 | 0 | 0 | 4 | 0 | 0 | 0 | 12 | .125 | .125 | .156 | .281 | 5 | 0 | 0 | 5 | 0 | 0 |
| 2024 | Foreign Major | JPCL | Hanshin Tigers | 12 | 18 | 12 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 1 | 5 | .000 | .071 | .000 | .071 | 0 | 0 | 0 | 4 | 1 | 0 |
| 2025 | Foreign Major | JPCL | Yakult Swallows | 3 | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | .000 | .000 | .000 | .000 | 0 | 0 | 0 | 0 | 0 | 0 |
| Totals | 139 | 258 | 222 | 6 | 20 | 3 | 0 | 0 | 9 | 0 | 0 | 5 | 113 | .090 | .113 | .104 | .217 | 23 | 5 | 1 | 28 | 2 | 0 |
Fielding:
| Year | Level | Lg | Team | Pos | GP | PO | A | E | DP | Fld% | RF/G |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2016 | Foreign Major | JPCL | Hanshin Tigers | P | 13 | 10 | 8 | 3 | 0 | .857 | 1.385 |
| 2017 | Foreign Major | JPCL | Hanshin Tigers | P | 12 | 1 | 9 | 4 | 0 | .714 | .833 |
| 2018 | Foreign Major | JPCL | Hanshin Tigers | P | 4 | 1 | 3 | 0 | 0 | 1.000 | 1.000 |
| 2019 | Foreign Major | JPCL | Hanshin Tigers | P | 25 | 6 | 18 | 3 | 2 | .889 | .960 |
| 2020 | Foreign Major | JPCL | Hanshin Tigers | P | 21 | 6 | 25 | 1 | 0 | .969 | 1.476 |
| 2021 | Foreign Major | JPCL | Hanshin Tigers | P | 25 | 15 | 30 | 1 | 0 | .978 | 1.800 |
| 2022 | Foreign Major | JPCL | Hanshin Tigers | P | 24 | 8 | 29 | 1 | 1 | .974 | 1.542 |
| 2023 | Foreign Major | JPCL | Hanshin Tigers | P | 18 | 4 | 17 | 2 | 1 | .913 | 1.167 |
| 2024 | Foreign Major | JPCL | Hanshin Tigers | P | 12 | 5 | 8 | 0 | 0 | 1.000 | 1.083 |
| 2025 | AA | EL | Reading Fightin Phils | P | 4 | 0 | 1 | 0 | 1 | 1.000 | .250 |
| 2025 | Foreign Major | JPCL | Yakult Swallows | P | 3 | 0 | 2 | 0 | 1 | 1.000 | .667 |
| 2025 | AAA | IL | Lehigh Valley IronPigs | P | 19 | 2 | 0 | 1 | 0 | .667 | .105 |
| Totals | 117 | 40 | 79 | 12 | 4 | .908 | 1.017 |
Minor League Service:
| Year | Level | League | Team | Affiliation | First Appearance | Final Appearance |
|---|---|---|---|---|---|---|
| 2016 | Foreign Major | Japan Central League | Hanshin Tigers | |||
| 2017 | Foreign Major | Japan Central League | Hanshin Tigers | April 15, 2017 | September 1, 2017 | |
| 2018 | Foreign Major | Japan Central League | Hanshin Tigers | |||
| 2019 | Foreign Major | Japan Central League | Hanshin Tigers | |||
| 2020 | Foreign Major | Japan Central League | Hanshin Tigers | |||
| 2021 | Foreign Major | Japan Central | Hanshin Tigers | |||
| 2022 | Foreign Major | Japan Central League | Hanshin Tigers | |||
| 2023 | Foreign Major | Japan Central League | Hanshin Tigers | |||
| 2024 | Foreign Major | Japan Central League | Hanshin Tigers | |||
| 2025 | Foreign Major | Japan Central League | Yakult Swallows | |||
| 2025 | AAA | International League | Lehigh Valley IronPigs | PHI | March 29, 2025 | June 14, 2025 |
| 2025 | AA | Eastern League | Reading Fightin Phils | PHI | June 26, 2025 | July 19, 2025 |
Persons data from the Chadwick Baseball Bureau are Copyright Chadwick Baseball Bureau, and are made available under the Open Data Commons Attribution License.
