[quote=@Vordak]
<Snipped quote by Mahz>

I specified that they do not have the wagers subtracted from their totals until the fight ends. 

For example, a user with 1000 points wagers 100. Through the fight, their total remains at 1000, but if they win the fight, they get to keep their points AND have 200 points (100+wager) as profit, rounding up at 1200 as total, but if they lose, then the 100 wager points are subtracted, resulting in 900 total for them.
[/quote]

This is actually the system I have been employing. I don't change any points until any given match is over.