How Does UFC Betting Work? Moneylines, Method of Victory, Rounds and What Voids Your Bet

UFC betting comes down to three questions about one fight: who wins (the moneyline), how they win (method of victory: knockout, submission or decision) and when it ends (round betting, total rounds, and whether it "goes the distance"). Everything else on a fight menu is a combination of those three.

The part that trips people up is settlement. Fights get changed at the last minute, and a small number end in a draw, a no contest or a technical decision. Each of those can void, push or grade your ticket, and the published rules of the big books do not agree with one another. Two examples from Massachusetts filings: if a fighter is replaced, DraftKings voids your bet; if a three-round fight is changed to five, MGM's Springfield book keeps your moneyline in action but DraftKings voids it.

The format you are betting on

The Unified Rules of MMA, maintained by the Association of Boxing Commissions, set five-minute rounds with a one-minute rest and allow bouts of one to five rounds. A typical UFC card schedules its main event for five rounds and the rest for three; UFC's own results page for UFC 313 in March 2025 says exactly that. Check the scheduled length of each bout you bet. The number of scheduled rounds drives every round and duration market, which is why a change to it matters so much.

The moneyline

A fighter at −250 against an opponent at +200:

• −250 implies 250 ÷ 350 = 71.43%.
• +200 implies 100 ÷ 300 = 33.33%.
• Total 104.76%. The 4.76 points above 100 is the book's margin.

Draws exist in MMA — the Unified Rules define unanimous, majority, split and technical draws — but they are rare enough that most books offer a two-way moneyline. If the fight is a draw, DraftKings' general rule pushes a two-way market with no draw option, MGM refunds both fighters, and Pinnacle voids both sides where no draw price was offered. Where a three-way line does include the draw, MGM pays the draw and loses both fighters.

Method of victory

Method markets split each fighter's win into ways it can happen. A typical menu is six outcomes: Fighter A by KO/TKO, by submission or by decision, and the same three for B, sometimes with a draw.

The definitions differ at the edges, and the edges are where the money is decided:

• Doctor, referee and corner stoppages. MGM counts a referee intervention, a doctor stoppage, a stoppage from a fighter's corner or an opponent's disqualification as a KO. DraftKings treats a referee or doctor stoppage for injury or disqualification as a TKO for round and method markets.
• Submissions. DraftKings counts technical and verbal submissions, including a submission to strikes, as submissions. Pinnacle is explicit that a submission is not a KO/TKO.
• Technical decisions. When an accidental foul stops a fight after enough rounds, the Unified Rules award a technical decision to the fighter ahead on the scorecards — after two of three scheduled rounds, or three of five. DraftKings and Pinnacle both treat that as a decision for settlement.
• Draws. Pinnacle settles method-of-victory Yes/No props as "No" if the fight is a draw.

Because the six outcomes cover the whole fight, their implied probabilities add up well past 100%. Adding them is the fastest way to see how much margin a method menu carries compared with the moneyline beside it.

Round betting, totals and "goes the distance"

Round betting asks which round the fight ends in, usually combined with the winner ("A in round 2"). Pinnacle treats a fight as finished in a round if it ends during that round or a fighter does not answer the bell for the next one. MGM applies the same bell test to full-round totals: on "2 full rounds", the fighter must answer the bell for round 3 for the over to pay.

Total rounds uses half-rounds. DraftKings and MGM both put the half at 2:30 of a five-minute round. Worked example with over/under 1.5 rounds:

• Fight stopped at 2:29 of round 2: that is 1 round and 149 seconds, under the 2:30 mark. Under 1.5 wins.
• Fight stopped at 2:30 of round 2: DraftKings' rule states 2:30 into round 2 "will equal over 1.5 rounds." Over 1.5 wins.
• Fight stopped at 4:59 of round 1: Under 1.5 wins.

Goes the distance asks whether the fight reaches the final bell. DraftKings settles "Yes" as won only if the full number of scheduled rounds reach their natural end. That creates an awkward case: a technical decision is a decision, but the fight did not go the full distance. DraftKings voids Go the Distance bets when a fight ends in a technical decision. Other books may grade it differently.

Weigh-ins and missed weight

Fighters weigh in before the event. In Nevada, NAC 467.514 requires the weigh-in to be public, in front of the opponent and a commission representative, on approved calibrated scales. A fighter who misses the contracted weight forfeits 25% of the purse to the opponent, or a lesser amount the commission sets, unless they are 1 lb or less over or make weight within an hour (NAC 467.522). Under the Unified Rules, when a fighter misses and the two are in different weight classes, the heavier fighter may not exceed the lighter by more than five pounds.

For betting, a missed weight is information, not a settlement event. MGM's rules treat a bout as official for betting "regardless of the scheduled length, weight, classification, and/or championship sanction," so if the fight goes ahead at a catch weight, your bet stands. What changes is the price, which can move between the weigh-in and the walkout. A fighter who visibly struggled to make weight is public information that arrives after the opening lines were posted.

Late replacements and cancelled fights

Here the house rules matter more than anywhere else in fight betting.

• Opponent changes. DraftKings' Massachusetts rules: "If either fighter in a Fight is replaced after the bet has been accepted by DraftKings, such bet will be voided." Your money comes back and you can bet the new matchup at its new price.
• Postponed or cancelled fights. MGM keeps bets if the fight is rescheduled within 48 hours of the original start and in the same country; otherwise all bets are cancelled. DraftKings requires a fight dated for December 31 to have a confirmed date by the end of that year, and voids a fight that starts but does not conclude within 48 hours.
• Changed rounds. DraftKings voids bets on a fight whose scheduled rounds change from what was announced when you bet. MGM leaves "outright" bets in action and cancels only round-by-round bets.

The general rule you can rely on: if the fight that happens is materially different from the one you bet on — a different opponent, or a different distance — expect at least some of your bets to be voided, and check which.

No contests

The Unified Rules call a fight a no contest when an accidental injury stops it before enough time has passed to go to the scorecards. DraftKings, MGM and Pinnacle all void bets on a no contest except where the result was already decided — a first-round total, for example, that was settled before the fight was stopped.

Reading a fight card as a bettor

MMA markets are thinner than NFL or NBA sides, and books protect themselves with lower limits and wider margins on the exotic props. The Academy's guide to markets that get you limited explains why niche props attract attention when you win on them. For settlement specifics across sports, see settlement rules for overtime and retirements.

The next guide in this series moves from two-person fights to 150-player fields: golf outrights and each-way betting.