The Prediction Markets

Stojsavljevic vs Sonmez

Starts in 11 hKickoff
Traded
$3K
Venues
Polymarket, Kalshi
Prices updated
2 min ago
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What the markets expect

Zeynep Sonmez 77%

Next is Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5 at 67.5%. Polymarket and Kalshi agree within 1 point on each matched outcome.

Odds by venue

Consensus blends each venue’s last price, weighted by how much has traded there. Best Yes price is the cheapest ask across venues, and the payout is what a winning $100 stake returns before fees. Open a row for each venue’s contract name, bid and ask, and how closely their rules match.

Prices come from our regular polls of each venue, the oldest 3 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Zeynep Sonmez
77%
Kalshi 77%polled, 2 min agoBest Yes 77¢ on Kalshi, $100 pays $130 (1.30x)
Kalshi
Contract
Zeynep Sonmez
Last price
77%
As of
Polled 2 min ago
Buy Yes
77¢
Sell Yes
76¢
$100 on Yes pays
$130 (1.30x)
Volume
$1K
Trade this on Kalshi
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
67.5%
Polymarket 67.5%polled, 3 min agoBest Yes 97¢ on Polymarket, $100 pays $103 (1.03x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set 1 O/U 9.5
Last price
67.5%
As of
Polled 3 min ago
Buy Yes
97¢
Sell Yes
38¢
$100 on Yes pays
$103 (1.03x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
65%
Polymarket 65%polled, 3 min agoBest Yes 66¢ on Polymarket, $100 pays $152 (1.52x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set 1 O/U 8.5
Last price
65%
As of
Polled 3 min ago
Buy Yes
66¢
Sell Yes
64¢
$100 on Yes pays
$152 (1.52x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
54.5%
Polymarket 54.5%polled, 3 min agoBest Yes 56¢ on Polymarket, $100 pays $179 (1.79x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Game Spread +/-4.5
Last price
54.5%
As of
Polled 3 min ago
Buy Yes
56¢
Sell Yes
53¢
$100 on Yes pays
$179 (1.79x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
54.5%
Polymarket 54.5%polled, 3 min agoBest Yes 55¢ on Polymarket, $100 pays $182 (1.82x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set Handicap +/-1.5
Last price
54.5%
As of
Polled 3 min ago
Buy Yes
55¢
Sell Yes
54¢
$100 on Yes pays
$182 (1.82x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
50%
Polymarket 50%polled, 3 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set 2 Winner
Last price
50%
As of
Polled 3 min ago
Buy Yes
98¢
Sell Yes
2¢
$100 on Yes pays
$102 (1.02x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
49%
Polymarket 49%polled, 3 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set 2 O/U 10.5
Last price
49%
As of
Polled 3 min ago
Buy Yes
98¢
Sell Yes
—
$100 on Yes pays
$102 (1.02x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
49%
Polymarket 49%polled, 3 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set 2 O/U 8.5
Last price
49%
As of
Polled 3 min ago
Buy Yes
98¢
Sell Yes
—
$100 on Yes pays
$102 (1.02x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
49%
Polymarket 49%polled, 3 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set 2 O/U 9.5
Last price
49%
As of
Polled 3 min ago
Buy Yes
98¢
Sell Yes
—
$100 on Yes pays
$102 (1.02x)
Trade this on Polymarket
Completed Match
48%
Polymarket 48%polled, 3 min agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
Completed Match
Last price
48%
As of
Polled 3 min ago
Buy Yes
96¢
Sell Yes
—
$100 on Yes pays
$104 (1.04x)
Volume
$110
Trade this on Polymarket
Show 7 more outcomes
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
44%
Polymarket 44%polled, 3 min agoBest Yes 45¢ on Polymarket, $100 pays $222 (2.22x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
Last price
44%
As of
Polled 3 min ago
Buy Yes
45¢
Sell Yes
43¢
$100 on Yes pays
$222 (2.22x)
Volume
$5
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
36%
Polymarket 36%polled, 3 min agoBest Yes 40¢ on Polymarket, $100 pays $250 (2.50x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 22.5
Last price
36%
As of
Polled 3 min ago
Buy Yes
40¢
Sell Yes
32¢
$100 on Yes pays
$250 (2.50x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
32.5%
Polymarket 32.5%polled, 3 min agoBest Yes 37¢ on Polymarket, $100 pays $270 (2.70x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 23.5
Last price
32.5%
As of
Polled 3 min ago
Buy Yes
37¢
Sell Yes
28¢
$100 on Yes pays
$270 (2.70x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
32%
Polymarket 32%polled, 3 min agoBest Yes 33¢ on Polymarket, $100 pays $303 (3.03x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Total Sets: O/U 2.5
Last price
32%
As of
Polled 3 min ago
Buy Yes
33¢
Sell Yes
31¢
$100 on Yes pays
$303 (3.03x)
Trade this on Polymarket
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
30%
Polymarket 30%polled, 3 min agoBest Yes 31¢ on Polymarket, $100 pays $323 (3.23x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set 1 Winner
Last price
30%
As of
Polled 3 min ago
Buy Yes
31¢
Sell Yes
29¢
$100 on Yes pays
$323 (3.23x)
Trade this on Polymarket
Stojsavljevic
24.4%
Polymarket 24.5%polled, 3 min agoKalshi 24%polled, 2 min agoBest Yes 25¢ on Polymarket, $100 pays $400 (4.00x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez
Last price
24.5%
As of
Polled 3 min ago
Buy Yes
25¢
Sell Yes
24¢
$100 on Yes pays
$400 (4.00x)
Volume
$2K
Trade this on Polymarket
Kalshi
Contract
Mika Stojsavljevic
Last price
24%
As of
Polled 2 min ago
Buy Yes
25¢
Sell Yes
24¢
$100 on Yes pays
$400 (4.00x)
Volume
$70
Trade this on Kalshi
Partial parity

Payoffs match in ordinary outcomes; see the rule differences below the table.

No arbitrage: the best bid elsewhere is 24¢, at or below the cheapest ask of 25¢.

Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
24%
Polymarket 24%polled, 3 min agoBest Yes 30¢ on Polymarket, $100 pays $333 (3.33x)
Polymarket
Contract
Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Set 1 O/U 10.5
Last price
24%
As of
Polled 3 min ago
Buy Yes
30¢
Sell Yes
18¢
$100 on Yes pays
$333 (3.33x)
Trade this on Polymarket

No cross-venue arbitrage right now: on every matched outcome, the best bid on one venue is at or below the cheapest ask on the other. Find markets with open spreads

Mostly the same bet: two differences

Where they differ

  • If the match is postponed: Kalshi resolves to a fair price if the match does not start within 48 hours of the scheduled time (tennis: not finished within two weeks); Polymarket stays open until the match is played and resolves 50-50 only if it is cancelled with no make-up (tennis: ~14 days).
  • Kalshi requires a ball to be played and pays the winner; Polymarket pays the player who advances, including on retirement. A pre-match walkover is a fair price on Kalshi, 50-50 on Polymarket.
Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: wtatennis.com
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: WTA
Show full rule comparison
  • If the match is postponed: Kalshi resolves to a fair price if the match does not start within 48 hours of the scheduled time (tennis: not finished within two weeks); Polymarket stays open until the match is played and resolves 50-50 only if it is cancelled with no make-up (tennis: ~14 days).
  • Kalshi requires a ball to be played and pays the winner; Polymarket pays the player who advances, including on retirement. A pre-match walkover is a fair price on Kalshi, 50-50 on Polymarket.
  • Trading closes Nov 12, 2026, 7:30 AM UTC on Polymarket and Nov 19, 2026, 6:00 AM UTC on Kalshi.

Summarized from each venue’s published rules; the venue’s own rules page is the final word.

How the odds have moved

The top 3 outcomes on both venues, with the consensus between them. Hover for exact values.

  • Zeynep Sonmez
  • Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5
  • Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5

Order books

Each venue’s resting orders for the selected outcome’s Yes contract, side by side. Top of book streams live; depth refreshes every 15 seconds.

Polymarket

Polymarket doesn’t list Zeynep Sonmez for this event.

Kalshi

Open on Kalshi ↗

Top of book

Connecting
Best bid
—
Spread
—
Best ask
—

Waiting for the first live quote…

Depth · top 8 levels

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Recent trades

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What your stake buys

Enter a stake to see where it buys the most after fees, using each venue’s live order book.

$
Buy

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Buys at the asks resting now (taker orders), cheapest after fees first, from order-book snapshots up to 15 seconds old. Fees: Kalshi 0.07 × price × (1 − price) per share, rounded up to the cent; Polymarket 0.05 × price × (1 − price) per share (sports rate). Fee calculator. Estimates only, not advice.

About this market

Live prediction market odds for "Stojsavljevic vs Sonmez". Zeynep Sonmez leads at 77%. Next is Prudential Hong Kong Tennis Open: Mika Stojsavljevic vs Zeynep Sonmez Match O/U 21.5 at 67.5%. $3K has traded across 17 outcomes on Polymarket and Kalshi. The market is expected to resolve by Nov 19, 2026.

Questions

What does the consensus price mean?

It is the price of a Yes contract that pays $1 if the outcome happens. A 14¢ price means traders put the chance near 14%. Where two venues list the same outcome, we blend their last prices, weighting the venue with more trading volume more heavily (neither counts for less than a quarter). When only one outcome can win, each venue’s prices add up to a little over 100% (its margin); the fair chance removes that margin so the outcomes add up to exactly 100%.

How is the payout worked out?

A Yes contract pays $1 if it wins, so at the best ask a $100 stake buys 100 ÷ ask contracts. At 18¢ that is about 555 contracts, paying $556 (5.56x) if Yes happens. Venue fees and price slippage on larger orders are not included.

Why do the venues show different prices?

Each venue has its own traders, fees and order book. Contracts can also settle on slightly different terms, which is why each row lists how closely the rules match.

Is a price gap an arbitrage?

Only when you can buy Yes on one venue below what someone pays for Yes on the other, after fees, and both contracts settle the same way. We show the executable bid and ask so you can check.

How fresh are these prices?

Venue prices refresh every few minutes, and the order book and live quotes stream continuously. Each venue’s card shows when we last observed it.

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