Masamichi Yabuki
Japanese boxer (born 1992)
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Masamichi Yabuki (born July 9, 1992) is a Japanese professional boxer. He is a three time world champion in two weight classes, having held the International Boxing Federation (IBF) flyweight title since March 2025. He previously held the World Boxing Council (WBC) light-flyweight title from 2021 to 2022 and the IBF light-flyweight title from 2024 to 2025.
July 9, 1992
| Personal information | |
|---|---|
| Born | Masamichi Sato July 9, 1992 Suzuka, Mie, Japan |
| Height | 5 ft 5+1⁄2 in (166 cm) |
| Weight | |
| Boxing career | |
| Reach | 64+1⁄2 in (164 cm) |
| Stance | Orthodox |
| Boxing record | |
| Total fights | 24 |
| Wins | 20 |
| Win by KO | 18 |
| Losses | 4 |
Professional career
Early career
Yabuki made his professional debut against Shohei Horii on March 27, 2016. He won the fight by a first-round technical knockout. He would go on to amass a 7–3 record over the next two years, most notably losing a close unanimous decision against Junto Nakatani on December 23, 2016,[1] and a split decision to Daniel Matellon on September 28, 2018.[2]
Yabuki won his next three fights, achieving stoppage victories against Bae Min-Chul, Ryuto Oho and Rikito Shiba, before he was scheduled to face Tsuyoshi Sato for the vacant Japanese light flyweight title on July 26, 2020. Yabuki stopped Sato with a left hook, near the end of the first round.[3] He was scheduled to make his first title defense against Toshimasa Ouchi on December 26, 2020.[4] He won the fight by unanimous decision.[5]
WBC light flyweight champion
Yabuki vs. Shiro
Yabuki, at the time the #1 ranked WBC light flyweight contender, was scheduled to challenge the reigning WBC light flyweight champion Kenshiro Teraji, in Shiro's ninth title defense, on September 10, 2021, at the City Gym in Kyoto, Japan.[6] The bout was later postponed for September 22, 2021, as both Shiro and his coach tested positive for COVID-19.[7] The fight was rescheduled for September 22, 2021.[8] Yabuki won the fight by a tenth-round technical knockout. He appeared to be ahead on the scorecards heading into the tenth round, which prompted Shiro to increase his pace and volume. Although Shiro seemed close to finishing him, Yabuki managed to take over the round near its end and unload with volume which forced the referee to stop the fight.[9]
Yabuki vs. Shiro II
On November 15, 2021, representatives of Kenshiro Teraji and Masamichi Yabuki held a press conference to announce that they’d agreed to a rematch, which would be held sometime in spring of 2022.[10] The rematch for the WBC title was officially announced on January 24, 2022.[11] It took place at the City Gym in Kyoto, Japan, on March 19, 2022.[12] Yabuki lost the fight by a third-round knockout.[13]
Post title reign
Yabuki faced the undefeated Thanongsak Simsri on September 10, 2022 in what was promoted as a world title prelude. He won the fight by a seventh-round technical knockout. Yabuki knocked his opponent down twice prior to the stoppage, in the second and sixth rounds. During the in-ring post-fight speech, Yabuki revealed that he had injured his pelvis in the third round. He also announced that he was considering moving up to fight for a title at flyweight[14] The fight was held at a catchweight of 50 kilograms.[15]
Yabuki faced Ronald Chacon on January 28, 2023. He won the fight by an eleventh-round technical knockout.[16]
IBF light-flyweight champion
Yabuki vs. Nontshinga
Yabuki stopped IBF light-flyweight champion Sivenathi Nontshinga in the ninth round at Aichi Sky Expo in Tokoname, Japan, on 12 October 2024 to become a two-time world champion.[17][18]
IBF Flyweight champion
Yabuki vs. Ayala
Yabuki challenged IBF flyweight champion Ángel Ayala at Aichi Sky Expo in Tokoname, Japan, on 29 March 2025. He became a two-weight world champion when he won the fight via technical knockout in the 12th round.[19][20]
Yabuki vs. Alvarado
Again at Aichi Sky Expo in Tokoname, Yabuki made a successful first defense of his title by knocking out Felix Alvarado in the 12th round on 27 December 2025.[21][22]
Yabuki vs. Calixto
Yabuki made the second defense of his IBF flyweight title against Rene Calixto at Aichi Sky Expo in Tokoname, Japan on 6 June 2026.[23][24] He won by unanimous decision.[25][26]
Professional boxing record
| 24 fights | 20 wins | 4 losses |
|---|---|---|
| By knockout | 18 | 2 |
| By decision | 2 | 2 |
| No. | Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
|---|---|---|---|---|---|---|---|---|
| 24 | Win | 20–4 | Rene Calixto | UD | 12 | Jun 6, 2026 | Aichi Sky Expo, Tokoname, Japan | Retained IBF flyweight title |
| 23 | Win | 19–4 | Felix Alvarado | KO | 12 (12), 1:59 | Dec 27, 2025 | Aichi Sky Expo, Tokoname, Japan | Retained IBF flyweight title |
| 22 | Win | 18–4 | Ángel Ayala | TKO | 12 (12), 1:54 | Mar 29, 2025 | Aichi Sky Expo, Tokoname, Japan | Won IBF flyweight title |
| 21 | Win | 17–4 | Sivenathi Nontshinga | TKO | 9 (12), 1:50 | Oct 12, 2024 | Aichi Sky Expo, Tokoname, Japan | Won IBF light-flyweight title |
| 20 | Win | 16–4 | Kevin Vivas | TKO | 4 (10), 2:41 | Mar 16, 2024 | Port Messe Nagoya, Nagoya, Japan | |
| 19 | Win | 15–4 | Ronald Chacon | TKO | 11 (12), 2:35 | Jan 28, 2023 | International Conference Hall, Nagoya, Japan | |
| 18 | Win | 14–4 | Thanongsak Simsri | TKO | 7 (10), 1:19 | Sep 10, 2022 | City Gymnasium, Yokkaichi, Mie, Japan | |
| 17 | Loss | 13–4 | Kenshiro Teraji | KO | 3 (12), 1:11 | Mar 19, 2022 | City Gym, Kyoto, Japan | Lost WBC light-flyweight title |
| 16 | Win | 13–3 | Kenshiro Teraji | TKO | 10 (12), 2:59 | Sep 22, 2021 | City Gym, Kyoto, Japan | Won WBC light-flyweight title |
| 15 | Win | 12–3 | Toshimasa Ouchi | UD | 10 | Dec 26, 2020 | Aioi Hall, Kariya, Japan | Retained Japanese light-flyweight title |
| 14 | Win | 11–3 | Tsuyoshi Sato | KO | 1 (10), 2:55 | Jul 26, 2020 | Aioi Hall, Kariya, Japan | Won vacant Japanese light-flyweight title |
| 13 | Win | 10–3 | Rikito Shiba | TKO | 4 (8), 1:53 | Dec 15, 2019 | Aioi Hall, Kariya, Japan | |
| 12 | Win | 9–3 | Ryuto Oho | TKO | 6 (8), 1:20 | May 1, 2019 | Korakuen Hall, Tokyo, Japan | |
| 11 | Win | 8–3 | Bae Min-Chul | TKO | 5 (8), 2:20 | Jan 27, 2019 | Wolbae Sports Center, Daegu, South Korea | |
| 10 | Loss | 7–3 | Daniel Matellon | SD | 8 | Sep 29, 2018 | Korakuen Hall, Tokyo, Japan | |
| 9 | Win | 7–2 | Gilberto Pedroza | KO | 2 (8), 1:44 | Jun 17, 2018 | Aioi Hall, Kariya, Japan | |
| 8 | Loss | 6–2 | Seigo Yuri Akui | TKO | 1 (8), 1:32 | Apr 8, 2018 | Suntopia, Sōja, Japan | |
| 7 | Win | 6–1 | Masashi Tada | TKO | 1 (6), 2:27 | Nov 26, 2017 | Aioi Hall, Kariya, Japan | |
| 6 | Win | 5–1 | Masaki Hirai | TKO | 2 (6), 0:59 | Jul 16, 2017 | Aioi Hall, Kariya, Japan | |
| 5 | Win | 4–1 | Kim Kwang-Min | TKO | 1 (4), 0:58 | Mar 26, 2017 | Aioi Hall, Kariya, Japan | |
| 4 | Loss | 3–1 | Junto Nakatani | UD | 4 | Dec 23, 2016 | Korakuen Hall, Tokyo, Japan | |
| 3 | Win | 3–0 | Ryosuke Nasu | KO | 1 (4), 1:04 | Nov 6, 2016 | EDION Arena, Osaka, Japan | |
| 2 | Win | 2–0 | Kiyoshi Nakamura | TKO | 1 (4), 2:12 | Aug 7, 2016 | Aioi Hall, Kariya, Japan | |
| 1 | Win | 1–0 | Shohei Horii | TKO | 1 (4), 2:29 | Mar 27, 2016 | Aioi Hall, Kariya, Japan |