Masayuki Ito
Masayuki Ito is a Japanese professional boxer who held the WBO junior lightweight title from 2018 to 2019.
Professional career
Ito turned professional in 2009 and amassed a record of 23-1-1 in 25 fights before challenging and beating Puerto Rican boxer Christopher Diaz for the vacant WBO junior lightweight title.Professional boxing record
| No. | Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
| 28 | Loss | 25–2–1 |  Jamel Herring | UD | 12 | 2019-05-25 | Osceola Heritage Park, Kissimmee | Lost WBO junior lightweight title |
| 27 | Win | 25–1–1 |  Evgeny Chuprakov | TKO | 7 | 2018-12-30 |  Ota City General Gymnasium, Tokyo | Retained WBO junior lightweight title |
| 26 | Win | 24–1–1 |  Christopher Díaz | UD | 12 | 2018-07-28 | Kissimmee Civic Center, Kissimmee | Won vacant WBO junior lightweight title |
| 25 | Win | 23–1–1 |  Vergil Puton | TKO | 9 | 2018-03-03 | Korakuen Hall, Tokyo | |
| 24 | Win | 22–1–1 | Glenn Enterina | TKO | 6 | 2017-09-02 | Korakuen Hall, Tokyo | |
| 23 | Win | 21–1–1 | Lorenzo Villanueva | TKO | 9 | 2017-04-13 | Korakuen Hall, Tokyo | Retained WBO Asia Pacific junior lightweight title |
| 22 | Win | 20–1–1 | Takuya Watanabe | UD | 12 | 2016-12-31 | Ota City General Gymnasium, Tokyo | Retained OPBF junior lightweight title; Won WBO Asia Pacific junior lightweight title |
| 21 | Win | 19–1–1 | Ernie Sanchez | TKO | 11 | 2016-07-28 | Korakuen Hall, Tokyo | Retained OPBF junior lightweight title |
| 20 | Win | 18–1–1 | Shingo Eto | UD | 12 | 2015-12-14 | Korakuen Hall, Tokyo | Retained OPBF junior lightweight title |
| 19 | Win | 17–1–1 | Dai Iwai | TKO | 10 | 2015-08-10 | Korakuen Hall, Tokyo | Won vacant OPBF junior lightweight title |
| 18 | Loss | 16–1–1 | Rikki Naito | MD | 10 | 2015-02-09 | Korakuen Hall, Tokyo | For Japanese junior lightweight title |
| 17 | Win | 16–0–1 | Ryan Sermona | TKO | 1 | 2014-11-25 | Korakuen Hall, Tokyo | |
| 16 | Win | 15–0–1 | Masao Nakamura | UD | 8 | 2014-07-30 | Korakuen Hall, Tokyo | |
| 15 | Win | 14–0–1 | Kazuya Nakano | KO | 7 | 2014-04-14 | Korakuen Hall, Tokyo | |
| 14 | Win | 13–0–1 | Kentaro Yamada | TKO | 2 | 2013-12-09 | Korakuen Hall, Tokyo | |
| 13 | Win | 12–0–1 | Jeffrey Arienza | TKO | 10 | 2013-09-30 | Korakuen Hall, Tokyo | Won vacant WBC Youth lightweight title |
| 12 | Win | 11–0–1 | Taiki Minamoto | UD | 8 | 2013-07-19 | Korakuen Hall, Tokyo | |
| 11 | Win | 10–0–1 | Yasuyuki Masuda | UD | 8 | 2013-04-08 | Korakuen Hall, Tokyo | |
| 10 | Win | 9–0–1 | Kosuke Saka | UD | 5 | 2012-12-16 | Korakuen Hall, Tokyo | |
| 9 | Win | 8–0–1 | Kazuyuki Yamao | UD | 5 | 2012-11-04 | Korakuen Hall, Tokyo | |
| 8 | Win | 7–0–1 | Kazuhiro Miura | UD | 4 | 2012-09-27 | Korakuen Hall, Tokyo | |
| 7 | Win | 6–0–1 | Masaru Sueyoshi | SD | 4 | 2012-07-31 | Korakuen Hall, Tokyo | |
| 6 | Win | 5–0–1 | Kyohei Tsunashima | TKO | 3 | 2012-05-29 | Korakuen Hall, Tokyo | |
| 5 | Draw | 4–0–1 | Tsuyoshi Tameda | SD | 4 | 2011-09-28 | Korakuen Hall, Tokyo | |
| 4 | Win | 4–0 | Tatsushi Kagawa | RTD | 2 | 2010-11-02 | Korakuen Hall, Tokyo | |
| 3 | Win | 3–0 | Shunsuke Takatsu | TKO | 1 | 2010-08-09 | Korakuen Hall, Tokyo | |
| 2 | Win | 2–0 | Takahiro Ozawa | TD | 3 | 2010-04-12 | Korakuen Hall, Tokyo | |
| 1 | Win | 1–0 | Katsunari Fujii | UD | 4 | 2009-05-26 | Korakuen Hall, Tokyo | Professional debut |