Normally, if I'm not mistaken, settled bets are settled bets. Betting sites usually won't overturn results. Lucky for those who bet on Garcia, the underdog in that match, for winning. But I'd like to ask those who bet on Haney, especially those who bet big. Now that the official decision is out, would anyone of you demand that your bets be returned since the fight is now officially declared as a no-contest?
Yes!
In the same way that, if the bet were judged fair (as is the case most of the time), I would not want my money to be blocked for several hours or days at the brokerage firm, waiting for this "verification".
Understand that, if I were to return the amounts, the casino would certainly lose out, since many users who were winners have already withdrawn their prize or bet on other games and lost everything (and this money went to other people).
Have you ever seen a casino losing money?
Also consider that in in-person bets, the money is "distributed" right after the fight ends, no one waits for hours or only comes back the next day to collect the money. So, whoever won would probably be away for a few days if they were called to return the money.
Is it unfair? Maybe so! But I don't see any practical solutions to this type of problem.