When you place your bets on MMA fights with Spin Sports, you can always stay on top of the latest happenings with In-Play bets for up-to-the-second wagers. If you have a favorite fighter to bet on, then you can make a simple bet on the winner of an individual fight. Or, you can bet over/under on the total number of rounds in the fight, bet on when it will end, or bet on a group of rounds.