Duda Tozoni

Maria Eduarda Tozoni — known throughout the BJJ world as Duda — was born in 2004 in Blumenau, Santa Catarina, Brazil. She stepped onto the mats for the first time at age 11, launching a journey that would carry her from a regional academy in southern Brazil to the highest levels of international competition. From the start, Tozoni trained under Marcos Cunha at The Match Champion Academy (TMC), a gym that, while outside the orbit of Brazil's major metropolitan powerhouses, proved to be an exceptional environment for her development.

What TMC lacked in name recognition, it compensated for through a genuine commitment to female athlete development. Tozoni trained alongside accomplished competitors including Ana Carolina Schmitt and Anna Negri, forming part of a cohesive group of women who pushed one another in daily training. Tozoni has credited this access to high-quality female sparring partners as central to her rise — providing the kind of technical and competitive preparation that athletes at many smaller academies simply do not have. The culture at TMC made it clear early on that her development would not be limited by geography.

Tozoni announced herself as a serious competitive prospect during her purple belt years, consistently performing at major events and signaling an upward trajectory in the rooster weight division. Her brown belt period sustained that momentum, with strong results at IBJJF and AJP events building her reputation as one of the division's most technically refined competitors.

The clearest recognition of her development came in June 2021, when Marcos Cunha promoted Tozoni to black belt at approximately 17 years of age — placing her among the youngest women to receive that rank in competitive BJJ. The promotion was not simply a reward for time on the mat; it was a statement about her technical maturity, competitive consistency, and readiness to operate at the sport's elite level. That a competitor from a smaller regional academy in Blumenau could reach black belt at such a young age speaks to both the quality of Cunha's coaching and the exceptional work ethic Tozoni brought to her training throughout those formative years.

Her progression from junior competitor to black belt on the major international circuit demonstrates the kind of development possible when a focused athlete trains within a well-structured, technique-first environment — even outside the traditional centers of Brazilian BJJ.

The defining pillar of Duda Tozoni's game is her mastery of the Lasso Guard — a complex, dynamic open guard system demanding exceptional timing, upper-body control, and a nuanced understanding of weight distribution and leverage. Tozoni has built her competitive identity around this guard, and any opponent preparing to face her must account for it as a central threat from the opening exchange.

In Tozoni's hands, the lasso guard functions as a multidirectional weapon. Offensively, it serves as a reliable platform for sweeps and submission entries, allowing her to destabilize guard passers and manufacture scoring opportunities with technical precision. Defensively, it neutralizes aggressive passers in the rooster weight division — where the margin between a successful sweep and a guard pass can be razor-thin.

This specialization reflects a broader philosophy within TMC's training culture: one that prioritizes building style-specific, technically nuanced competitors over generalists who cover broad ground without mastering any single area. Tozoni's lasso game is the clearest expression of that philosophy, and it has become the primary lens through which the BJJ community understands and anticipates her performances.

Duda Tozoni's competition record places her firmly among the elite of the rooster weight division across multiple major organizations and formats. The most striking indicator of her consistency is her record at the IBJJF European Open, where she has captured gold on four separate occasions — establishing herself as one of the most dominant forces the competition has seen in her weight class. Winning a prestigious international title once is an achievement; winning it four times reflects a level of sustained excellence that is difficult to overstate.

Beyond the European Open, Tozoni has demonstrated that her game translates across formats and competitive environments. On the AJP circuit — the Abu Dhabi-affiliated series drawing elite international talent — she claimed the Grand Slam title in Rio de Janeiro in the mixed division, underscoring her ability to compete and win against the broadest possible pool of opponents. She also captured the AJP Brazilian National Pro title in the mixed division, reinforcing her credentials across both the IBJJF and AJP ecosystems.

On home soil, Tozoni has twice claimed the CBJJ Brazilian National Championship — a title carrying significant weight within Brazilian BJJ and reflecting dominance at the national level. Her two-time run as Brazilian national champion, set alongside her international accolades, paints the picture of a competitor who performs at the highest level regardless of the stage.

At the 2024 IBJJF World Championship, Tozoni competed as a black belt and reached the quarter-finals before falling to Mayssa Bastos, one of the most accomplished rooster weight competitors in the history of the sport. A loss to Bastos at that stage of the Worlds contextualizes rather than diminishes Tozoni's standing — it places her squarely within the conversation among the very best in the division globally.

No thread runs more consistently through Duda Tozoni's competitive career than her rivalry with Brenda Larissa, a fellow elite rooster weight competitor whose matchups with Tozoni have produced some of the most closely watched contests in recent Brazilian BJJ. The two athletes have met three times across brown and black belt mixed division competition, with Tozoni holding the edge in the series at two wins to one.

The 2-1 record reflects a competitive advantage, but Larissa's ability to take a win in the series signals that these matchups are never a foregone conclusion. Both athletes bring high-level technical games to the mat, and their repeated meetings reflect a mutual awareness and preparation that pushes both competitors to the upper limit of their abilities.

For Tozoni, the rivalry serves as evidence of her capacity to perform under pressure against an elite, familiar opponent. Winning against unfamiliar competition is one measure of quality; sustaining an edge against an opponent who has studied your game across multiple encounters is another entirely. The Tozoni–Larissa series has unfolded across major competitive events and stands as one of the defining matchups in the rooster weight division during the period spanning Tozoni's transition from brown to black belt.