Sports Odds Across Every Prediction Market

A sports prediction market is not a sportsbook. Nobody sets a line and nobody takes the other side of your bet. Each outcome trades as a contract that pays $1.00 if it happens and nothing if it does not, and the price in cents is simply what the last two traders agreed the probability was. A team at 62¢ is the market saying 62%. The platform earns a fee on the trade rather than a margin baked into the odds, which is why the two sides of a game should add up to roughly a dollar instead of the 104% to 110% a book charges.

This page covers every matched sports market we track: game winners, spreads and totals for the week's slate, season-long futures, award races, player props, tournament outrights and an esports slate. Each card shows every platform currently quoting that question side by side, cheapest highlighted. The league pills above narrow the board, and the NFL, college football, MLB and tennis boards go deeper on each.

The venues carrying most of the volume are built differently. Kalshi is a CFTC-regulated US exchange trading in dollars, with the densest football ladders. Polymarket settles in USDC, draws global flow and lists the widest soccer and tennis calendar. Polymarket US, Novig, ProphetX and others overlap on the biggest games. Where two of them quote the same matchup, a gap of several cents is routine, and the cheaper side is the better entry for an identical payoff.

Prediction Markets vs. Sportsbooks

Three differences matter in practice. Price discovery: a contract price moves whenever a trader is willing to pay more or accept less, so it tracks news faster than a book that has to decide to move its line. Exit: you can sell a contract before the game ends and lock in a gain or cut a loss, where a bet slip is held to settlement. Limits: an exchange has no reason to restrict a winning account, because it is not on the other side. The trade-off is depth. Away from the marquee games a book will usually quote more markets and absorb a larger ticket than a thin contract can.

Read the rules before treating a cross-venue gap as arbitrage. Overtime handling, postponement policy and the official source of the final score can differ between platforms, and two contracts that look identical are occasionally not. The arbitrage scanner only surfaces pairs whose rules have been matched, which is the safer place to start.

How to Read the Odds Cards Above

Each card is one game or one future. The platform cells carry the live price at every venue quoting each outcome, and the cheapest quote is highlighted. Prices link out to the market on the platform itself, and the card opens the full cross-platform table with price history. The odds converter turns any price into American, decimal or fractional odds if you are used to a book.