There has been a genuine spike as you guys have noticed about players coming from a particular country betting on a particular sport and/or markets.

It has forced us to fully review a whole entire sport and we will have to make a business decision on that at some stage soon.

Stats Perform, another international sports data company, has chosen not to offer certain lower-tier table tennis events to its sportsbook clients. Jake Marsh, head of integrity for Stats Perform, told ESPN there's a "heightened level of risk at the moment," especially with loosely organized, lower-tier events involving poorly paid athletes, as fixers have fewer sports to target.

Shawn Harnish, a 38-year-old experienced sports handicapper, said he first thought the increased betting buzz around table tennis was a joke, but he now bets it regularly, specifically on Moscow Liga Pro.

"The best way to describe it is if you picture what may be a Knights of Columbus KGB version pingpong tournament would look like," Harnish said. "I've really treated the whole pingpong thing as just staying sharp as far as my routine, doing it every day, looking at the numbers."

Betting limits on table tennis vary from sportsbook to sportsbook, ranging from $250 to $1,000 or more, but are generally smaller than the maximum amounts accepted on NFL games, for example.

"Basically, the only integrity going on in those leagues was done through limit control," said Holt, of U.S. Integrity. "But for [the books] it was a risk-reward: keep the customer and maybe they beat you out of $500."

When asked if that was a responsible move, Holt said it was a "pandemic move," making Russian table tennis "a controlled Wild West in the U.S."