A prop bet — short for proposition bet — is a wager on something that happens inside a game rather than on who wins it. A bettor can back a running back’s rushing yards or guess which team scores first, and the outcome has nothing to do with the final score. Your team can lose and your prop can still pay out.
Sportsbooks now post hundreds of these markets on a single NFL game and dozens on a routine NBA or MLB matchup. Most fall into one of three categories — player props, team props and game props — and most are structured as either an over/under on a number or a yes/no on whether an event occurs. A handful, like first touchdown scorer, list every eligible player at its own price.
How the Lines Are Built
A player prop starts life as a projection. A sportsbook’s model estimates a player’s expected yards, points or receptions based on recent usage, the opponent, pace of play and likely game script, then sets a line near that number — usually at a half point so the bet can’t push. Both sides commonly open around -115, and the line or the price shifts as money comes in.
Payouts run on standard American odds: risk $115 to win $100 at -115, or risk $100 to win $110 at +110. Because the implied probability on -115 runs about 53.5 percent, the two sides of a typical prop add up to roughly 107 percent — the sportsbook’s built-in edge, known as the hold. That’s notably steeper than the roughly 4.5 percent hold on a standard -110 point spread. Many apps also let bettors shift a line up or down for a different price, turning a single prop — say, a quarterback’s passing yards — into a ladder of options that often feeds same-game parlay builders.
Why the Rules Differ by State
Prop markets have drawn more regulatory scrutiny than almost any other bet type, because a single player can influence a single statistic far more easily than a team can influence a final score. That scrutiny plays out differently depending on where a bettor lives.
- Ohio prohibits props on individual college athletes.
- Maryland also prohibits props on individual college athletes.
- New Jersey blocks bets on in-state college teams specifically.
- Kentucky imposes no college restriction at all.
College team props and game-level props remain available in all of these states wherever college betting is otherwise legal — it’s individual-athlete markets that run into trouble.
Nevada, by contrast, is one of the few places where the novelty props that get attention around the Super Bowl — the length of the national anthem, the color of the Gatorade shower, the opening song of the halftime show — actually exist. Most state regulators elsewhere permit only props tied to on-field play, so those entertainment markets are largely confined to Nevada sportsbooks and offshore operators. Legal apps in most states will still offer plenty of game and player props on the Super Bowl itself, just not the sideshow bets.
The Basics, Answered
A full-game prop includes overtime unless the market specifically names a quarter or half; first-half and quarter props end when that period does. On the common
