Ryuya Yamanaka
Ryuya Yamanaka is a Japanese former professional boxer who held the WBO minimumweight title from 2017 to 2018.
Professional career
Yamanaka was born in Mihara. Yamanaka turned professional in 2012 and went 14-2 in his first 16 fights before challenging and beating Tatsuya Fukuhara for the WBO minimumweight title. In his first defense stopped Mexican challenger Moises Calleros in the 8th round. On 13 July 2018, Yamanaka lost the title by unanimous decision after being battered by Vic Saludar. Yamanaka suffered a cut over his eye, and was knocked down in the seventh round. Yamanaka suffered a subdural hematoma during the bout and was forced to retire afterwards.Professional boxing record
| No. | Result | Record | Opponent | Type | Round, time | Date | Location | Notes |
| 19 | Loss | 16–3 |  Vic Saludar | UD | 12 | 13 Jul 2018 |  Central Gym, Kobe, Japan | Lost WBO minimumweight title |
| 18 | Win | 16–2 |  Moises Calleros | 8, 3:00 | 18 Mar 2018 | Portopia Hotel, Kobe, Japan | Retained WBO minimumweight title | |
| 17 | Win | 15–2 | Tatsuya Fukuhara | UD | 12 | 27 Aug 2017 | Shiroyama Sky Dome, Ashikita, Japan | Won WBO minimumweight title |
| 16 | Win | 14–2 |  Khanongmek Sithkrukong | KO | 1, 1:39 | 12 Mar 2017 | Central Gym, Kobe, Japan | |
| 15 | Win | 13–2 | Merlito Sabillo | UD | 12 | 11 Nov 2016 | Central Gym, Kobe, Japan | Won vacant OPBF minimumweight title |
| 14 | Win | 12–2 | Thoedkiad Weerachon | TKO | 3, 1:23 | 16 May 2016 | Central Gym, Kobe, Japan | |
| 13 | Win | 11–2 | Ryo Narizuka | UD | 8 | 11 Dec 2015 | Central Gym, Kobe, Japan | |
| 12 | Win | 10–2 | Yoshinori Wakahara | UD | 10 | 2 Aug 2015 | Prefectural Gymnasium, Osaka, Japan | |
| 11 | Win | 9–2 | Ronelle Ferreras | UD | 8 | 29 Apr 2015 | Sangyo Shinko Center, Sakai, Japan | |
| 10 | Win | 8–2 | Takahiro Murai | UD | 8 | 7 Dec 2014 | IMP Hall, Osaka, Japan | |
| 9 | Loss | 7–2 | Roque Lauro | 8 | 22 Aug 2014 | Central Gym, Kobe, Japan | ||
| 8 | Win | 7–1 | Hiroki Yamamoto | UD | 8 | 6 Apr 2014 | Bunka Center, Mimasaka, Japan | |
| 7 | Win | 6–1 | Junya Nishikawa | UD | 6 | 22 Sep 2013 | Shingu Fureai Welfare Hall, Tatsuno, Japan | |
| 6 | Win | 5–1 | Masaki Hirai | TKO | 4, 1:57 | 12 Jul 2013 | Central Gym, Kobe, Japan | |
| 5 | Loss | 4–1 | Kenta Shimizu | 1, 2:22 | 21 Apr 2013 | Abeno Ward Center, Osaka, Japan | ||
| 4 | Win | 4–0 | Takayuki Teraji | 2, 2:36 | 17 Feb 2013 | Kippy Mall, Sanda, Japan | ||
| 3 | Win | 3–0 | Junpei Omori | UD | 4 | 2 Nov 2012 | Central Gym, Kobe, Japan | |
| 2 | Win | 2–0 | Kenta Yokoe | UD | 4 | 15 Sep 2012 | Congress Center, Nagoya, Japan | |
| 1 | Win | 1–0 | Kazuki Koyanagi | 4 | 22 Jun 2012 | Central Gym, Kobe, Japan |