Combos: Kalshi and Polymarket US combo calculator for teams and players.
Tap two or more picks tonight and see how often they all hit.
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Favorites together this season
Every night, the biggest favorites by pre-game Kalshi price, and how often all of them won.
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Questions
What is a combo?
One contract made of several picks: teams to win, player numbers, touchdowns or goals. It pays $1 if every pick hits and nothing if any of them misses. Kalshi and Polymarket US both offer combos and quote one price for the whole thing.
How is the chance worked out?
Each price is the market’s chance of that pick. Multiply them: 70¢ and 60¢ give 0.70 × 0.60 = 42%. So the combo hits about 42% of the time, a fair price is about 42¢, and $10 at that price returns about $23.80 if both hit.
Why check the app’s price?
The app’s combo price comes from market makers and is often a little higher than the picks add up to. Type it in under your combo to see the difference in cents.
Can I mix players and teams from the same game?
Yes, and the combo tells you when you have. Picks from one game tend to hit together (a player’s big night and his team winning), so the real chance is usually higher than multiplying shows. Only one team per game can be picked to win.
Which player picks are there?
NBA points, rebounds, assists, threes, double-doubles and triple-doubles; NFL touchdowns, catches and yards; NHL goals, points and assists. All come from Kalshi’s player markets, which usually open in the afternoon.
Are there fees?
Polymarket US charges a fee on combos, and the price check adds it for you (most accounts pay C × p × [0.095 × (1 − p) + 0.06 × (1 − p)4]). Kalshi shows its fee on the order screen before you confirm.
Market prices, not advice. Which app lists what, and each one’s offer: best prediction market apps. Want to practice reading prices for free? Play Called It.