No Japanese boxer has won a world title in fewer professional fights than five — a record Kosei Tanaka set in 2015. On September 27 at Toyota Arena in Tokyo, unbeaten Tomoya Tsuboi (3-0, 2 KOs) gets a chance to tie it, in just his fourth pro outing, against a man who has fought nineteen times and beaten a former world title challenger in his last start. That’s the whole story of this fight in one sentence: dazzling amateur pedigree racing the clock against Ricardo Malajika’s (17-2, 12 KOs) hard-earned professional experience, for the vacant WBC super flyweight world championship.
| Date | Sunday, September 27, 2026 |
| Venue | Toyota Arena, Tokyo, Japan |
| Event | Prime Video Boxing 16 — Inoue vs. Tenshin II |
| Division | Super Flyweight (115 lbs), 12 rounds |
| Title | WBC World Super Flyweight Championship (vacant) |
| Broadcast | Prime Video (Japan only) |
The bout is a co-feature on a stacked Teiken Promotions card built around the Takuma Inoue vs Tenshin Nasukawa WBC bantamweight rematch, with Ryusei Matsumoto vs Russell Acosta contesting the interim WBO minimumweight title and Ryosuke Nishida vs Sam Goodman fighting for an interim IBF super bantamweight title on the same night.
Tomoya Tsuboi is a 30-year-old Japanese southpaw-turned-technician out of Hamamatsu who arrives with a spotless 3-0 record and one of the most decorated amateur backgrounds in the sport — a gold medal at the 2021 World Amateur Championships in Belgrade. He turned pro in 2025 and has needed just three fights to reach a world title shot, including a stoppage of former title challenger Carlos Cuadras in eight rounds last November. Tsuboi’s game is built on footwork and distance management rather than power; his trainer Sen’ta Tanaka has called his boxing IQ “outstanding,” and Tsuboi has been blunt about backing that assessment up: he says his ring experience — not just his professional log — outstrips Malajika’s by “dozens of times.”
That confidence comes with an obvious caveat. Tsuboi is 3-0 with one no-contest, and Malajika has fought at 12-round world-title pace in his most recent bouts. The distance question is one of the sharpest edges in this matchup.
Ricardo Malajika, 28, of Johannesburg, brings a 17-2 record with 12 knockouts and the kind of championship pedigree Tsuboi simply hasn’t had time to build: the reigning IBO super flyweight world champion, with four defenses of that belt since winning it in 2023. Where Tsuboi is elegance and angles, Malajika is volume and finishing instinct — a 70% knockout rate that reflects genuine pop at 115 pounds. His most recent fight, a unanimous decision over former world title challenger Vince Paras in November 2025, was scheduled for twelve rounds and gave him a live look at championship-rounds boxing that Tsuboi has never needed to survive. Malajika’s corner for this fight includes former WBA world champion Brian Mitchell, working with him ringside — and Mitchell has noted the date carries its own weight: it’s exactly 40 years since he won his own world title at Sun City, on September 27, 1986.
| Tsuboi | Malajika | |
|---|---|---|
| Age | 30 | 28 |
| Record | 3-0 (2 KOs) | 17-2 (12 KOs) |
| Height | 5’3” | 5’2” |
| Reach | 63” | 64.5” |
| Stance | Orthodox | Orthodox |
Tsuboi — last three completed fights
| Result | Opponent | Method | Round |
|---|---|---|---|
| Win | Carlos Cuadras | TKO | 8 |
| Win | Van Thao Tran | UD | 10 |
| NC | Pedro Guevara | NC | 2 |
The Guevara bout was stopped at 0:23 of round 2 and ruled a No Contest.
Malajika — last two finished fights
| Result | Opponent | Method | Round |
|---|---|---|---|
| Win | Vince Paras | UD | 12 |
| Win | Jayson Mama | TKO | 5 (of 12) |
This is a fight between two different definitions of readiness. Tsuboi’s edge is spacing: an orthodox boxer with quick feet who wants to control range and pick his moments, not trade in exchanges he doesn’t need. Malajika’s edge is pressure: close the distance, apply volume, and turn every midpoint stretch of a fight into a chance to end it early — four defenses of a world title without leaving the win column is not the record of a boxer who fades under pressure.
The scheduled 12 rounds matter enormously here. Malajika has already proven he can operate at that distance against a live opponent; Tsuboi hasn’t gone past ten. If Tsuboi can keep this at arm’s length and box on the back foot for stretches, his technical polish gives him a route to a decision. If Malajika forces a fight — closes range, makes Tsuboi work defensively for extended periods — his experience edge compounds round over round.
Tomoya Tsuboi wins if:
Ricardo Malajika wins if:
Bookmakers have made Tsuboi a heavy favorite — around -333 (approx. 1/3 fractional) to Malajika’s +333 (approx. 10/3) — largely on the strength of his amateur pedigree and unbeaten record on paper. That price undersells how little championship-distance experience Tsuboi actually has. Malajika has fought at 12-round world-title pace in his recent bouts and has finished 70% of his wins inside the distance; those are the numbers of a fighter who doesn’t need the judges. Tsuboi’s technical tools are real, but three professional fights against a battle-tested, four-time title defender who can end things early is a live puzzle for the market’s short-odds favorite.
Prediction: Ricardo Malajika, stoppage inside the distance.
| Country | Broadcaster | Local Start Time |
|---|---|---|
| Japan | Prime Video | 5:00 PM JST |
Prime Video Boxing 16 streams exclusively in Japan on Amazon Prime Video. International availability outside Japan has not been confirmed at time of writing.
Whichever way the WBC super flyweight title goes on September 27, it lands on a fighter whose story it will define. A Tsuboi win ties a national record that has stood for over a decade and instantly makes him one of the sport’s fastest-rising names. A Malajika win brings the WBC’s “Green and Gold” belt back to South Africa and validates the gamble of stepping in with a champion’s manager, in a champion’s corner, for the first time. The same Toyota Arena card also carries the Inoue-Nasukawa rematch and two more world-title fights — a genuinely loaded night of championship boxing in Tokyo. Boxing Data tracks every fighter on the card through the fighters endpoint, including full records, physical measurements and recent form.
When is Tomoya Tsuboi vs Ricardo Malajika? Sunday, September 27, 2026, at Toyota Arena in Tokyo, Japan.
What title is on the line? The vacant WBC World Super Flyweight Championship.
What are Tsuboi’s and Malajika’s records? Tsuboi is 3-0 with 2 knockouts; Malajika is 17-2 with 12 knockouts.
How can I watch Tsuboi vs Malajika? Prime Video Boxing 16 streams the card exclusively in Japan on Amazon Prime Video. International broadcast arrangements outside Japan have not been confirmed.
Who is favored to win? Bookmakers list Tsuboi as a significant favorite at roughly -333, with Malajika around +333.
Is this Tsuboi’s first world title fight? Yes — it’s just his fourth professional bout. A win would tie the fastest Japanese route to a world title, a national record set by Kosei Tanaka in 2015.
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