Match Fixing in Tennis: Why the Sport Is So Exposed and the Cases That Proved It

It should have been a nothing match. Nikolay Davydenko, a top-five player, against Martin Vassallo Arguello of Argentina, ranked 87, at the Orange Prokom Open in Sopot, Poland. Matches like that, at tournaments like that, barely cause a ripple on the betting exchanges.

This one caused a tidal wave. About £3.4 million went through Betfair, roughly ten times the norm for a match at that level, and most of it was on the outsider. Vassallo Arguello lost the first set and the money still kept pouring in for him. Then Davydenko retired in the third set with a foot injury, and Betfair did something it had never done before: it voided every bet on the match.

Now the bit that matters most. The ATP spent a year investigating, and on 12 September 2008 it announced it had found no evidence of wrongdoing by Davydenko, Vassallo Arguello or anyone associated with the match. Davydenko always firmly denied any wrongdoing. His own explanation was that he may have tipped off bettors without meaning to, by talking about his injury in Russian to his wife in the stands.

So the most famous suspicious market in the history of match fixing in tennis ended in a clearance. Hold on to that, because it runs through everything that follows: a strange betting pattern is a reason to look, never proof of a fix. Sopot changed the sport all the same. It forced tennis to build an integrity system almost from scratch.

This is the tennis chapter of our match fixing in sport series. It runs from that match in Poland to a Belgian courtroom in June 2023 and the bans that followed, and it finishes with what it all means for anyone who bets on tennis.

"The current tennis environment provides a lamentably fertile breeding ground for breaches of integrity."
— Independent Review Panel, interim report, 25 April 2018

That line came from the most thorough review tennis has ever commissioned, and one of the panel's investigators described a "tsunami" of integrity breaches at the lower levels. Damning stuff, and hard to argue with. Three things make the sport such a tempting target.

One player decides everything

To fix a team sport you have to buy several people, or a referee. In tennis there's one player on each side of the net. One person can lose a match, drop a set or throw a single service game, and nobody else on court needs to know a thing. That makes small, precise fixes possible: a game here, a set there, with the overall result left alone. The scoring system helps too, because one broken serve can swing a whole set, which is the point of our piece on tennis scoring maths. Snooker has exactly the same weak spot, as our guide to snooker match fixing shows.

The money at the bottom is thin

The glamour of the Grand Slams hides a harsh economy underneath. The Independent Review Panel found that "very few professional players can earn enough to break even", which leaves them in what it called an "invidious position". Add poor facilities and empty stands at low-tier events, and you have players who are struggling, unwatched and easy to approach.

Live data fed the markets

Every one of those low-tier matches could be bet on, because official live scoring was sold to the betting industry. Sportradar had been the principal supplier of live ITF scoring since 2012. In its final report, published in December 2018, the panel recommended cutting off official data from the lowest tier of professional events from 1 January 2019, and giving the integrity unit power to set limits on live-scoring data. It accepted that would cost the ITF revenue. When a review tells a governing body to switch off one of its own income streams, you know how seriously it rates the problem.

From a voided market in 2007 to a criminal conviction in 2023, these are the tennis match fixing scandals and cases that shaped how the sport polices itself. Don't read it as a list of famous fixed tennis matches, mind. The most famous match on it ended with nobody found to have done anything wrong.

Sopot showed how little power tennis really had. The ATP could interview people and examine betting accounts, but it couldn't force anyone to hand over phone records. Some individuals simply refused, and by the time other records were obtained, the phone companies had destroyed them under data protection laws.

The sport's answer was an independent review, commissioned by the governing bodies in 2007 and 2008, which flagged 45 matches worth a closer look, eight of them at Wimbledon. The ATP approved 15 recommendations, players were told to report any corrupt approach within 48 hours, and life bans went on the table. Out of all that came the Tennis Integrity Unit, set up in 2008 as an arm of the ITF.

Its first big scalp came in 2011. Austria's Daniel Koellerer, who had reached a career-high ranking of 55 in October 2009, was banned for life for match-fixing and fined $100,000. No player had ever been given a lifetime ban for fixing before.

Koellerer took his case to the Court of Arbitration for Sport. In March 2012, CAS upheld the life ban but overturned the fine, because he hadn't benefited financially from the charges he was found liable for. There was no criminal conviction. This was the sport using its own rules, and it set a template that still holds: tennis can end a career without a criminal court ever getting involved.

The Italian case shows what happens when sport and prosecutors pull in the same direction. Prosecutors in Cremona gathered intercepted phone calls that drew in two well-known Italian players, Potito Starace and Daniele Bracciali.

In August 2015, after its own investigation and the Cremona probe, the Italian Tennis Federation's tribunal banned both men for life. Bracciali was fined €40,000 and Starace €20,000.

The Barcelona ruling

Starace's troubles didn't stop at the federation. He also faced the Tennis Integrity Unit, and Independent Anti-Corruption Hearing Officer Professor Richard McLaren found him guilty of match-fixing over a match at the ATP 500 tournament in Barcelona in April 2011, and of facilitating betting. He was banned for ten years and fined $100,000.

What strikes us about the Italian case is the quality of the evidence. Betting patterns raise suspicion. Intercepted calls can show intent, and that's precisely the kind of material a sporting body can't gather on its own, however sharp its analysts are.

On 17 and 18 January 2016, the BBC and BuzzFeed News published an investigation that rocked the sport. It examined betting on about 26,000 matches and reported suspected fixing reaching the top level, Wimbledon included, linked to syndicates in northern Italy, Sicily and Russia. Reports spoke of evidence pointing to a core group of 16 professional players.

No players were named, and nobody was sanctioned as a result of the reporting. The tennis authorities rejected the suggestion that they had suppressed evidence. But the pressure was enormous, and the governing bodies acted that same month.

The Independent Review Panel

They set up an Independent Review Panel led by Adam Lewis QC, with Beth Wilkinson and Judge Marc Henzelin, and with betting consultants Paul Leyland of Regulus Partners and Patrick Jay advising. It carried out more than 1,000 interviews.

Its interim report on 25 April 2018 found no evidence of institutional corruption or a cover-up by the Tennis Integrity Unit or the authorities. What it did find was "insufficient oversight", and a lower tier wide open to abuse. It made 12 recommendations, among them restricting live-scoring data, controlling the number of matches available for betting, ending betting sponsorships, education, tougher rules and sanctions, and a better-resourced, more independent integrity unit.

That last point delivered the biggest change. The Tennis Integrity Unit, which ran from 2008 to 2020, made way for the International Tennis Integrity Agency (ITIA), founded in 2021. It's funded by the ATP, WTA, ITF and the four Grand Slams, but legally independent of all of them. For our money, that separation is the most important thing tennis has done in this whole story.

"Collaboration between the ITIA and Belgian authorities led to a five-year custodial sentence for the leader of the syndicate, Grigor Sargsyan."
— International Tennis Integrity Agency

This is the case that proved the review panel right. In January 2019, the Associated Press reported that Grigor Sargsyan, then 28, was being held in a Belgian jail, and that four French professionals had also been arrested. At that stage up to 100 players were suspected of involvement.

The sums were small and the reach was huge. Players were paid between €500 and €3,000 to fix a game, a set or a match, and small bets were spread across many accounts and people to avoid attention. Later reporting put the number of players linked to the network at at least 181, across five continents. One man's network, reaching that far.

In June 2023, a Belgian court sentenced Sargsyan, known as "the Maestro", to five years in prison for leading the syndicate, along with financial penalties. It's the clearest criminal conviction in the tennis story, and it came from sporting investigators and police working side by side.

The players who were banned by the ITIA

The sporting cases took longer, because the integrity process had to work through each player in turn. The fixed matches dated from 2017 and 2018. The bans landed in 2024.

• The French group. Jérôme Inzerillo was banned for five years and seven months, and David Guez and Romain Bauvy for four years each, after all three admitted the charges and accepted agreed sanctions. Yannick Jankovits (two years) and François-Arthur Vibert (two years and three months) had their sanctions set by an independent hearing officer.
• The Latin American group. Ivan Endara of Ecuador and Mexico's Mauricio Resendiz Dominguez and Raul Isaias Rosas-Zarur were each banned for five years, and Mexico's Ivar and Aitor Aramburu Contreras for shorter terms. All five admitted the charges and accepted agreed sanctions.
• The longest ban. Argentina's Agustin Moyano denied the charges and went to a full hearing. Anti-Corruption Hearing Officer Charles Hollander KC suspended him for 15 years and fined him $10,000 from 2 December 2024.

The charges included contriving outcomes, facilitating betting, accepting money for not giving best efforts and failing to report corrupt approaches. Most of the players linked to the network have never been publicly named or sanctioned, so only those with a finding or an admission against them belong on any list.

The ITIA works out of Roehampton in London, with around 35 staff covering intelligence, investigations, education, legal work and, since 1 January 2022, the sport's anti-doping programme. Doping is a separate offence from fixing, run under its own rules. Karen Moorhouse has been chief executive since late 2022, and Jennie Price chairs the supervisory board.

From alert to ban

Much of the intelligence starts in the betting markets. Operators share betting alerts with the ITIA under formal agreements, and our guide to how betting integrity units catch fixers explains how those alerts work. The ITIA itself says an alert is not proof of fixing. Sopot is the reminder.

When there's enough evidence, the ITIA takes the case to an independent Anti-Corruption Hearing Officer. Players can admit the charges and accept an agreed sanction, or fight them at a hearing, as Moyano did. Appeals go to the Court of Arbitration for Sport in Lausanne, which hears the case afresh. Sanctions run from fines and suspensions, sometimes partly suspended, all the way up to lifetime bans.

Reporting is a duty

Players must report corrupt approaches, and keeping quiet is an offence in its own right. It featured in the 2024 Belgian charges. Officials are covered too: chair umpires appear on the integrity unit's sanctions list alongside players.

Betting is not fixing

One line needs drawing clearly. Around the time of the Sopot inquiry, Mathieu Montcourt was banned for two months and fined $12,000 for betting on matches, and Cermak and Mertinak were suspended for betting in July 2008. Those were breaches of the rules on players gambling, not match fixing, and they don't belong in the same sentence as Koellerer or Sargsyan.

The sport's limits are real. The integrity bodies have no police powers, which is why the Italian and Belgian cases leaned so heavily on prosecutors. When the two work together, as they did in Belgium, the results speak for themselves.

Look at where the review panel aimed its warnings: the sport's lower tiers, where prize money is small and crowds are thin. Kicker's fixes came at two Challenger events, and in the Belgian case a single game could be bought for as little as €500. That's the end of the sport where the risk sits.

The red flags are worth recognising: heavy, unexplained money on an outsider in a low-tier match, prices that lurch with no injury or news to explain them, and a market that suddenly gets far busier than a match of that level has any right to be. None of it proves anything. Sopot is the best example going of a wild market with an innocent ending. It's simply why the monitoring exists.

Know your settlement rules, too. At Sopot, Betfair voided every bet on the match. Mid-match retirements are a fact of life in tennis, and each bookmaker publishes its own retirement rule, so find out how yours settles a bet when a player quits before the end.

Our view is simple. Stick to UK-licensed bookmakers, and favour the big tour-level and Grand Slam markets over obscure low-tier matches. Liquidity is deeper there, scrutiny is heavier, and you're far less likely to end up on the wrong side of someone else's inside knowledge.

Tennis has had its dirty laundry aired in public more than almost any sport, and we reckon that's a strength rather than a stain. The review panel was brutally honest, the ITIA is independent of the tours that fund it, and a Belgian court sentenced the man at the centre of a network linked to more than 180 players to five years. The system also got the hardest call right at Sopot, where a frightening market ended in a clearance.

• One player, one fix. Tennis needs only one person to go wrong, which is why single games and sets get as much scrutiny as results.
• The danger lives at the bottom. The review panel's warnings centred on low-tier events with low pay and empty stands.
• A voided market isn't a verdict. Betfair voided Sopot, and the ATP still found no evidence of wrongdoing.
• Betting breaches aren't fixing. Players who gambled on tennis broke the rules, but they didn't fix matches.
• Police powers crack the big cases. Intercepted calls in Italy and the Belgian prosecution did what sporting bodies couldn't manage alone.
• Licensed books and big markets protect you. Clear retirement rules and heavy monitoring are worth more than a fancy price on a match nobody's watching.

Related guides

• Match fixing in sport: how it's done and every sport hit
• How betting integrity units catch fixers
• Snooker match fixing: the scandals that shook the baize
• Match fixing in cricket: spot-fixing and the cases behind it
• Match fixing in football: the biggest scandals
• Tennis scoring maths: why small edges win matches

18+. Please gamble responsibly. For free, confidential support visit BeGambleAware.org. If something about a tennis market doesn't look right, tell your bookmaker or the International Tennis Integrity Agency.