Match fixing in football is increasingly prevalent in Asia, where lax betting regulations coupled with the sheer scale of its gambling market make it an extremely attractive place for criminal gangs, according to sports integrity experts.
The fixing of football matches - or soccer as it's known in Australia and the United States - has been around for decades, but some experts warn it's now endemic worldwide.
Darren Small is the Director of Integrity at Sportradar, a company that monitors global betting and is employed by major sports governing bodies, including Football Federation Australia.
He says match fixing is particularly rampant throughout Asia.
"Asia is it's own sort of animal really," he said.
"They run a lot with agents and people who are taking bets on behalf of bookmakers and the money track goes through a pyramid system almost to get through to the top end.
"It's a not very transparent system, which doesn't allow for clarity as to who's placed bets where and why.
"We're talking about organised crime working within football, or within sport to manipulate results for their own financial benefit."
The enormity of the match fixing problem was recently exposed by Europol, the European Union's police body.
It identified nearly 700 suspicious matches and more than 400 corrupt officials, players and serious criminals across the world.
The vast number of games played, and a massive increase in online betting make the sport an easy target for organised crime, which FIFA estimates makes as much as $15 billion dollars a year from manipulating matches.
"We know that there are games that are fixed, but we also know that it's very difficult to do anything about the organisers and especially cheats," FIFA president Sepp Blatter said.
Tracking down the organisers may be difficult, but FIFA has adopted a zero tolerance approach towards cheating players.
So far this year it has handed out life bans to 41 players in South Korea alone.
Brendan Schwab is the Asian chair of the world soccer players' union, FIFPro. He says the consequences for those involved in match fixing are often tragic.
"Local Korean players who have been named and associated with match fixing have been unable to deal with that, and there's been a number of suicides among players in those countries."
Mr Schwab says other countries that are vulnerable to the corruptive practices of match fixing include Malaysia, Indonesia and China.
European police are currently investigating a major syndicate based in Singapore, which they allege is a main player in the global betting scam.
In an effort to combat match fixing, Interpol will host a major conference on corruption in football in Malaysia next week.
Soccer in Australia came into the spotlight last week, when police revealed a bookmaker in South-East Asia took $49 million dollars on a game between Adelaide United and Melbourne Victory played on December 7.
The betting on the A-League match highlights how Asia's gambling market is increasingly turning to Australian soccer.
Sports security experts say Friday night games played in Australia are especially popular in South-East Asia because they can be watched live and gambled on live.
Sportradar monitors more than 300 bookmakers across the world, before and during a match, and looks for spikes in betting and any other suspicious patterns.
It was monitoring that match in December and noted that the bookmaker in South-East Asia took about four times the usual amount from gamblers for an A-League game.
In the end, the company and police found nothing amiss about the match or Adelaide's 4-2 win.
"We're not identifying that there's match fixing going on at this stage," Dep. Comm Graham Ashton from Victoria Police said.
"But it is widespread overseas and the increasing betting pools mean we need to take preventative action now to make sports more resilient from the threat that is coming down the pile."
Police say a key part of that preventative action is using tools like Sportradar.
"We monitor these with an automated system, which generates an alert tells us when there's a concern, when something has reached a point where we need to do some more investigation," Mr Small said.
"Then my analyst jumps on - they start researching. They then ask our freelancers who are based in over 18 different countries worldwide and they do some research as to what may be the reason behind that."
If anything unusual is detected, the information is immediately passed onto law enforcement agencies and sports federations.
FIFPro Asia Chairman Brendan Schwab travels around the region, making players aware of the techniques criminals use to draw them in.
"It might start with something as blatant as introducing an athlete to women - introducing them to a casino where they can get into debt - perhaps exposing to them illicit drugs where they otherwise have a vulnerability which they don't want to be exposed to their club, their family or to the media and there all of a sudden there's a problem," he said.
"Then the criminal elements can say to the player: there's a way out of this problem for you and unfortunately that can involve playing in a way which may facilitate the fixing of a match."
Mr Schwab will head to Kuala Lumpur next week to attend a conference against match fixing, organised by Interpol and the Asian Football Confederation.
He will be pushing for better conditions and protection for the union's 65,000 members.
"Clearly if these 65,000 professional players are alive to the issues, are well educated, are well resourced and have their rights respected so that they're not vulnerable - then clearly it's a major step forward in making sure that the players are doing whatever they can do to collaborate with the policing authorities and the football authorities to make sure the game is as clean as it possibly can be," he said.