Odds would be shit and the chances of losing money is very high. I'd say I won't touch any of it unless I have some insider information on what's happening in-between matches. It's pretty hard trying to beat some people of their money who already knows the outcome of the games that would be played, and at that point it's better to just throw your money on dice and hope to win in the process. I've bet on a lot of fixed matches, and right before the line closes, the odds would sway hard on the one that I bet on, ending up on an almost no-profit bet for me..
It's best to stay away on these type of games unless you're an insider IMO.
Everyone has their own secrets, even those people who have big names in the industry, their secrets are hidden and well protected by people who have power to do so, so even though you know someone who will provide you such information, it will be filtered, because confidential information are always stay hidden, but it won't take long before the smoke came out of the room.
You won't see it coming, so, it is a trial and error process when it comes to gambling, even in life, we have to risk something to gain something, but not every time it will turns out good, most of the time it is what we are not expecting to be.