In just one night during the last World Cup in 2014, a 35-year-old man lost a whopping $30,000 on three matches. In that month alone, Ken (not his real name) chalked up some $80,000 in gambling losses.

Ken, who works in a design firm, said he has cut down on gambling for the sake of his family. He is still placing bets on the matches of the ongoing World Cup in Russia, though his bets - and losses - are now limited to hundreds of dollars.