A fellow I know signed W2-G's for $15,000 in slot winnings one year. A few years later the IRS told him he owes taxes on another $35,000. Either the casino provided the information on the player's other winnings (he played rated), or the IRS asked the casino to provide a profile on him and discovered he won another $35,000 from table games. His win/loss statement shows $50,000 in overall winnings and breaks it down between slots and table games. His only hope is to find loss offsets from other casinos for that time period.