Bantamweight
- WBA title
- Rematch
First fight, 30 Aug 2023: Seiya Tsutsumi won on points (unanimous decision)
Teiken Promotions · U-NEXT
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Japan · Bantamweight
Riku Masuda
- 29 years old
- 5′7″
- WBA Regular champion
- Fights on 29 November 2026
- Wins
- 11
- Losses
- 1
- Draws
- 0
- KOs
- 9
82% of wins inside the distance
Form
Fights
Next fight
- Judge 1
- 113-115
- Judge 2
- 117-111
- Judge 3
- 117-111
Judges' scorecards (WBA record)
Before that
- WinNonito Donaire15 Mar 2026TKO · 8 (10)
- WinJose Calderon Cervantes24 Nov 2025TD · 5 (10)
- WinMichell Banquez8 Jun 2025KO · 1 (10)
- WinKaisei Matsumoto1 Mar 2025TKO · 6 (10)
Show the next 5 fights
- WinYoshihiro Utsumi2 Nov 2024TKO · 7 (10)
- WinFumiya Fuse18 Jul 2024KO · 4 (10)
- WinJonas Sultan24 Feb 2024KO · 1 (8)
- LossSeiya Tsutsumi30 Aug 2023UD · 10
- WinFumiya Fuse20 May 2023TKO · 7 (8)
2 older fights · BoxRec profile ↗
Rankings
Best: Regular champion
- WBA
C
Regular champion
tracked since Aug 2026
Not ranked by the WBC, WBO, IBF or IBO.
World titles
1 championship reign · 1 sanctioning body · 1 weight class
Bantamweight
- WBAsince 2026
In 2026.
Reigning
- WBABantamweight · regular championsince 20 Jul 2026 · 3 months↗
Current titles: the sanctioning bodies' official rankings. History and dates: Wikipedia's lists of world champions (CC BY-SA 4.0), re-read every week.
Movement
Places gained or lost with each sanctioning body. Green is up, red is down, “New” marks an entry into the rankings, and a dot a period with no published archive.
| Body | The boxer's place in the sanctioning body's official ranking. “C”: world champion, above No. 1. An interim champion is marked as such (“Interim”, “Int.”): not the reigning champion. No. 1 is the leading contender for the title. | 1M | 3M | 6M | 1Y |
|---|---|---|---|---|---|
| WBA | C | — | · | · | · |
Trajectory, body by body
WBA
Championtracked since Aug 2026
IBF
No longer ranked · best No. 4 (Dec 2025)tracked since Apr 2024
See the changes in detail
| Aug 2026 | Champion |
| Apr 2024 | No. 15 |
| Jul 2024 | No. 14 |
| Aug 2024 | No. 13 |
| Oct 2024 | No. 11 |
| Dec 2024 | No. 10 |
| Jan 2025 | No. 9 |
| Mar 2025 | No. 8 |
| May 2025 | No. 6 |
| Sep 2025 | No. 5 |
| Oct 2025 | No. 6 |
| Dec 2025 | No. 4 |
| Apr 2026 | No. 5 |
| May 2026 | No. 4 |
| Jun 2026 | dropped out of the ranking |