Sumire Yamanaka
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| Personal information | |
|---|---|
| Nationality | Japanese |
| Born | 20 November 2001[1] |
| Height | 146 cm (4 ft 9 in)[2] |
| Weight | |
| Boxing career | |
| Reach | 148 cm (58 in)[2] |
| Stance | Southpaw[2] |
| Boxing record | |
| Total fights | 11 |
| Wins | 10 |
| Win by KO | 3 |
| Losses | 1 |
Sumire Yamanaka (山中菫, Yamanaka Sumire; born 20 November 2001) is a Japanese professional boxer. She is a two-time IBF female atomweight champion, having held the title since April 2026 and previously from January 2024 to April 2025.
Yamanaka made her professional boxing debut on 13 December 2020, scoring a unanimous decision win over Arika Shimono at Edion Arena in Osaka.[3]
She won the vacant WBO Asia Pacific 102-pound belt by stopping Honoka Kano in the fifth round of their bout at Tokyo's Korakuen Hall on 1 September 2022.[4]
On 12 January 2024, Yamanaka captured the IBF female atomweight title with a unanimous decision success against defending champion Mika Iwakawa also at Korakuen Hall.[5][6][7]
Yamanaka was scheduled to make the first defense of her title against former WBC female atomweight champion Fabiana Bytyqi at Olympiastuetzpunkt in Heidelberg, Germany, on 23 November 2024.[8] The bout was cancelled after Bytyqi collapsed due to dehydration on the day of the weigh-in.[9]
She faced WBC, WBA and WBO female atomweight title holder Tina Rupprecht in a contest to crown an undisputed champion for the division at the MBS Arena in Potsdam, Germany, on 5 April 2025.[10] Yamanaka lost by majority decision with two of the ringside judges scoring the contest 99–91 and 96–95 respectively for her opponent, while the third had it a 95–95 draw.[11][12][13]
Yamanaka became a two-time IBF female atomweight champion when she defeated the previously unbeaten Nao Ugawa via split decision for the vacant title at Korakuen Hall in Tokyo on 7 April 2026. Two of the judges awarded her the fight 97–93 and 96–94 respectively, overruling the third who gave it 96–94 for her opponent.[14][15][16]