"Loophole" at a sportsbook let's me win risk-free

Do you think a gambling company would make a larger payout in exchange of information that will make them lose less money? Short story. I found a "loophole" and won quite a lot of money in just a few hours, risk-free. I would like to ask for 100-200k usd and in return I tell them the "loophole" so they don't risk others finding out, or perhaps others already know. Do you think they'd go for it? At the same time I don't really want to tip them off in case they wouldn't be interested in a deal.. How would you go about it if you sat on this type of information?