The English Premier League is awashed with sports bets, according to a sports integrity watchdog.

Chris Eaton, executive director of Qatar-based International Centre for Sport Security, told Agence France Presse that “up to €1 billion is bet on each Premier League game,” noting that large sums of bets are being placed on results, regardless of which teams are playing.

The former head of FIFA security estimated that as much as 80 percent of the money gambled on Premier League games comes from countries, or even administrative regions within countries, where sports gambling is illegal. Most bets are for half-time and full-time scores, where the “big money” is made, according to the report.

Eaton pegged the sports gambling market to be worth around $1.5 trillion annually, adding that majority of wagers are spent on football, followed by cricket and tennis.