Last verified: 6 October 2026. This is information about tennis in Brazil and about the rules that applied to betting on it. It is not a recommendation to use any betting service, and it contains no operator rankings.
Tennis has a small but passionate following in Brazil, with moments of enormous national pride. Gustavo "Guga" Kuerten turned a country of football fans into a country that stayed up to watch Roland Garros, and a new generation led by João Fonseca has brought the sport back into the Brazilian conversation. Because the tennis season produces matches almost every day of the year, in every part of the world, it was also one of the sports offered under Brazil's authorised betting framework. This page explains the Brazilian tennis landscape, the way tennis betting markets are built, how betting worked under the old rules, what changed on 25 September 2026 and how to protect yourself.
Brazilian tennis: past and present
Brazilian tennis history is dominated by one name. Gustavo Kuerten won the French Open at Roland Garros in 1997, 2000 and 2001 and reached world number one, making him by far the most successful Brazilian tennis player of all time. His success created the sport's modern Brazilian audience.
The current generation is led by João Fonseca, who is from Rio de Janeiro. He won the Swiss Indoors in Basel in 2025, beating Alejandro Davidovich Fokina 6–3, 6–4, which gave him his second ATP Tour singles title. In February 2026, aged 19, he and Marcelo Melo won the doubles title at the Rio Open in front of a home crowd, with Fonseca becoming the youngest doubles champion at an ATP 500 event since the category was introduced in 2009. In singles at the same tournament he lost in the round of 16. He also reached the quarter-finals of the 2026 French Open. These results show a young player developing quickly, and they also show why predicting individual matches is difficult.
The Rio Open and the tennis calendar
The Rio Open is Brazil's most important tournament. It is an ATP 500 event played on clay in Rio de Janeiro each February, as part of the Latin American swing at the start of the clay-court season. Other Brazilian events are mostly in the Challenger and lower-level circuits, and Brazilian players spend much of the year travelling.
The international calendar is organised by surface and by tournament level:
- Grand Slams (Australian Open, Roland Garros, Wimbledon and the US Open) are the most prestigious events and use a best-of-five format for men.
- Masters 1000 and 500/250 tournaments fill the rest of the tour, with the ATP for men and the WTA for women.
- Surfaces matter: clay, grass and hard courts reward different styles. A player who is dominant on clay may be much weaker on grass.
How tennis betting markets are built
Tennis is easier than most sports to structure into markets, which is one of the reasons it was popular with operators. Typical markets include the match winner, the exact set score, the number of games in the match, set handicaps and individual set winners. Live markets update after every point or game.
Three features of tennis are important for anyone trying to understand the odds:
- The format magnifies skill differences. In a best-of-five match, the better player is more likely to win than in a best-of-three, because there is more time for the difference in quality to show. Prices therefore differ between Grand Slams and other tournaments.
- Momentum is overrated. A player who wins the first set is a favourite in the match, but a single set can swing on a few points. In-play prices can move sharply, which tempts bettors into impulsive decisions.
- Retirements and walkovers. If a player retires injured, the rules on how bets are settled depend on the operator's terms. Understanding settlement rules before betting avoids surprises.
As in every market, the sum of the implied probabilities (one divided by each decimal price) is above 100%, and the difference is the bookmaker's margin. That margin is the reason why long-term results tend to be negative even for informed bettors.
How tennis betting worked under the authorised framework
From 1 January 2025 until September 2026, tennis betting was offered in Brazil as part of the fixed-odds ("quota fixa") market by companies authorised by the Secretaria de Prêmios e Apostas (SPA). The public summaries of the ordinances describe rules that applied to every sport:
- bettors had to be at least 18 and were registered with their CPF number, an identity document and facial recognition;
- operators could not accept credit cards or give credit to bettors;
- bettors could withdraw their available balance, and payouts of prizes could not carry withdrawal fees;
- operators had to take part in integrity monitoring, and authorities could suspend bets and withhold prizes in manipulation cases;
- advertising could not promise easy gains or target minors.
Tennis integrity is a topic of its own. The individual nature of the sport and the large number of lower-level matches, where players earn modest prize money, have made it a target for manipulation attempts in several countries. This is a reason why monitoring and the power to suspend bets mattered.
What changed on 25 September 2026
Medida Provisória nº 1.394/2026 prohibits the exploitation, offering, intermediation and advertising of fixed-odds betting throughout Brazil, including sports betting and online games and including companies based abroad that serve people in Brazil. New deposits were barred from 25 September, the voluntary withdrawal window closed on 5 October at 23:59 Brasília time, platforms were due to be offline on 6 October and balances are returned to the original payment accounts between 9 and 14 October, with Caixa Econômica Federal as the fallback afterwards. The measure is provisional: Congress has 60 days, extendable by 60, to approve, amend or reject it. For the full timeline, read our guide to the ban.
Following tennis without betting
You can follow Brazilian tennis easily. The ATP and WTA publish schedules and results, the Rio Open is broadcast every year, and Fonseca's progress is covered by national media. Learning how tournaments are seeded, how surfaces affect play and how rankings work will make you a better observer of the sport whether or not you ever place a bet.
Safety: what to watch for now
Tennis "tips" channels on messaging apps, claims of "fixed" matches and offers to recover a betting balance for a fee are all common scam formats. A person who sells you the result of a match is either lying or describing a crime. Do not deposit on any website or app that is still accessible: after the measure it operates outside the rules and has no obligation to pay you. Our guide on spotting fake betting sites and Pix scams explains the warning signs, and the page on Pix covers limits and what to do if you were scammed.
Responsible gambling
Tennis runs almost every day, which makes it easy to bet continuously. If betting has caused problems for you or someone close to you, in Brazil the Centro de Valorização da Vida (CVV) offers free emotional support by phone on 188, 24 hours a day, and peer-support groups such as Jogadores Anônimos exist. Set a budget, never chase losses and never use money you need for essentials.
Why one match proves little
Tennis results are shaped by a long chain of small events: serve percentage, break-point conversion, fatigue from the previous round and the surface. A player who wins a title on one surface can lose early on the next, and a young player who has a breakthrough week can take months to repeat it. Looking at a player's results across many matches, on the surface in question, is more informative than looking at the last result alone. That also applies to Brazilian fans: national pride is a reason to follow a player, not a reason to expect a particular result.
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