Explore How UFC Moneyline Numbers Work
A negative moneyline number — say -175 — tells you how much you need to wager to return $100 in profit. A positive number — say +145 — tells you how much profit a $100 wager returns. In a UFC main event, the fighter with the negative line is considered the market favorite; the fighter with the positive line is the underdog.
The gap between those two numbers is the sportsbook's margin built into the line. When a fight is close to a coin flip, both lines may sit near -110 or -115. When a heavy favorite steps in, that negative number climbs steeply — sometimes past -400 — so understanding implied probability before you wager matters as much as knowing who the stronger
fighter is.