All comparisons

Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud: Kalshi vs Polymarket odds

Casper Ruud: 66¢ on Kalshi, 67¢ on Polymarket. Kalshi is 1¢ cheaper for "Yes".

Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud

Kalshi vol $14KPolymarket 24h $10K
OutcomeKalshiPolymarketGap
Casper Ruud66¢67¢+1¢
Jan-Lennard Struff35¢34¢-1¢
Trade on Kalshi Trade on Polymarket

Why the same contract has two prices

Kalshi and Polymarket run separate order books with different traders, so prices drift apart. Fees differ, and liquidity differs by market. Check each exchange's resolution rules before treating a gap as free money: small wording differences can mean the contracts are not identical.

Where can you trade it?

Kalshi and Polymarket US availability depends on your state, and sports contracts are blocked in some states. Check your state.

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