Kalshi China Open: Jelena Ostapenko vs Elise Mertens odds
On Kalshi, Elise Mertens closed at 99%. Trading has closed; the result settles the contracts. A contract that closed at 99¢ pays $1 if that outcome is the result, and nothing if not. Polymarket lists it too, and we compare the two prices below.
Also on Polymarket: Polymarket's page
Kalshi · final prices · updated
Also priced on Polymarket: compare both
Kalshi odds on every outcome
Chance is each outcome's Yes price on Kalshi. A Yes contract at 99¢ pays $1 if that outcome wins.
Kalshi vs Polymarket on this match
The same match on both venues. Trading has ended; these are the last prices each venue quoted.
| Venue | Jelena Ostapenko | Elise Mertens | Result |
|---|---|---|---|
| Polymarket | 0¢ | 100¢ | Settled: Elise Mertens |
| Kalshi | 1¢ | 99¢ | Settled: Elise Mertens |
How the odds have moved
Kalshi's own series for the outcome the headline prices, from where its history starts; one venue, not a blend.
How this market settled
The contract is “Elise Mertens wins”. A Yes contract pays $1 if the answer is yes, and nothing if not. Kalshi publishes the full settlement rules on the market's page. Read them on Kalshi (opens in a new tab)
Scheduled resolution: Oct 4, 2026.
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Common questions
What are the Kalshi odds on China Open: Jelena Ostapenko vs Elise Mertens?
On Kalshi, Elise Mertens closed at 99%. That is a market-implied probability, not a forecast, and it moves as traders buy and sell.
How does this market resolve?
By Kalshi's own settlement rules for this market. Two venues can word the same question differently and settle differently, so read them before you trade.
Is this question on Polymarket too?
Yes. Polymarket's page has its prices and rules. Our side-by-side page shows both prices and both venues' rules.
Can I trade this market in my state?
In most states, yes, on Kalshi. Sports contracts are the exception: several states restrict them. Check your state first.
How accurate are Kalshi odds?
Often more accurate than polls, though never certain. A price of 70% should lose three times in ten. How accurate prediction markets are has the research.
What does it cost to trade on Kalshi?
A trading fee on each contract, largest near 50¢ and smaller towards either end. Kalshi's fees has the formula.