Odds screen

An odds screen puts the same market at every venue on one row, so the question of where the best price is gets answered by looking rather than by opening five apps. Trading desks and professional bettors have worked from screens like this for decades. This one does the same job for prediction markets: games are rows, venues are columns, and the cheapest quote on each side is marked. Each price is the cost in cents of a contract that pays a dollar if that side wins, so the number you see is also the implied probability.

The Hot tab opens on the major leagues in play this week, and the league tabs narrow the board to the NFL, college football, the NBA, the NHL, MLB, soccer or tennis. Grid shows every venue as its own column for one market at a time; List shows the best price per side on the moneyline, spread and total for every game at once. Switch the board to Player props for the same treatment of every priced prop on the slate.

Finding the Best Betting Odds on Each Side

The best odds on a side are the lowest price for the same payout. A team at a few cents less at one venue than another is the better entry for an identical contract, and on a busy slate that gap is routine rather than rare. The screen marks the lowest price on every side, and a tap on any price opens the pick drawer with every venue quoting that side, its book depth, and the price history. Hide the venues you cannot use from the Books control and the marks recompute over the books that are left, so the best price shown is one you can actually take.

Hold beside each market is what the two best prices add up to beyond a dollar. A small positive hold is the cost of a round trip. A negative hold means the cheapest side at one venue and the cheapest other side at another pay out more than they cost together; the arbitrage scanner lists those pairs with the settlement rules already matched.

Prediction Market Odds Screen vs. Sportsbook Odds Screens

Screens such as OddsJam, OpticOdds and the old Don Best feed compare sportsbook lines, which a trading desk set with its margin built in. This screen compares exchange prices that traders set by buying and selling contracts, and that changes what the numbers mean. No line setter: a price moves whenever a trader will pay more or accept less, so it tracks news without a desk deciding to move. Both sides should add to about a dollar rather than the 104 to 110 percent a book charges, because the venue earns a fee instead of a spread. You can sell a contract before the game ends to lock in a gain or cut a loss. No limits on a winning account, because no venue is on the other side of your trade. The trade-off is depth: away from the marquee games a sportsbook will usually quote more markets and absorb a larger ticket than a thin contract can, which is why the drawer shows book depth next to every price.

Read the rules before treating a gap as free money. Overtime handling, postponement policy and the official source of the final score can differ between venues, and two contracts that look identical are occasionally not.

The Venues on the Board

Kalshi is a CFTC-regulated US exchange trading in dollars, with the densest football ladders. Polymarket US is Polymarket's regulated exchange for US customers, also in dollars. Novig and ProphetX are federally regulated, peer-to-peer sports exchanges quoting moneylines, spreads, totals and props. Polymarket settles in USDC, draws global flow and lists the widest soccer and tennis calendar. Predict.fun is an onchain prediction market that overlaps on the biggest games. Where two of them quote the same side, the cheaper one is the better entry for an identical payoff, and the screen exists to show which one that is right now.

Live Odds Screen for Games in Play

Games in play stay on the board with their score and clock, and prices stream over a live connection while the page is open, with each cell flashing as it moves. A quote the venue has not confirmed recently is marked stale rather than shown as fresh, so a slow book does not look like a bargain. The time beside the controls is when the prices on screen last changed. The standard NFL, college football and all sports pages show the same markets as cards with futures and price history, and the odds converter turns any price into American, decimal or fractional odds.