The Prediction Markets

Almaty Open: Stefanos Tsitsipas vs James Duckworth

Full timeKickoff Waiting for the venues to settle
Traded
$553K
Venues
Polymarket, Kalshi
Prices updated
just now
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What the markets expect

Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5 100%

Next is Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5 at 100%. The venues list this event, but none of their outcomes are matched yet, so prices are shown separately.

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. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
100%
Polymarket 100%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Set 2 O/U 9.5
Last price
100%
As of
Polled just now
Buy Yes
—
Sell Yes
99.9¢
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
100%
Polymarket 100%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Set 2 Winner
Last price
100%
As of
Polled just now
Buy Yes
—
Sell Yes
99.9¢
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
100%
Polymarket 100%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Set 2 O/U 8.5
Last price
100%
As of
Polled just now
Buy Yes
—
Sell Yes
99.9¢
Trade this on Polymarket
Tsitsipas
100%
Polymarket 100%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth
Last price
100%
As of
Polled just now
Buy Yes
—
Sell Yes
99.9¢
Volume
$11K
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
99.5%
Polymarket 99.5%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Set Handicap +/-1.5
Last price
99.5%
As of
Polled just now
Buy Yes
—
Sell Yes
99¢
Volume
$354
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
99.5%
Polymarket 99.5%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Game Spread +/-3.5
Last price
99.5%
As of
Polled just now
Buy Yes
—
Sell Yes
99¢
Volume
$73
Trade this on Polymarket
Completed Match
99.5%
Polymarket 99.5%polled, 45s ago
Polymarket
Contract
Completed Match
Last price
99.5%
As of
Polled just now
Buy Yes
—
Sell Yes
99¢
Volume
$6
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
0.5%
Polymarket 0.5%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 23.5
Last price
0.5%
As of
Polled just now
Buy Yes
—
Sell Yes
—
Volume
$3
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
0.5%
Polymarket 0.5%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 21.5
Last price
0.5%
As of
Polled just now
Buy Yes
—
Sell Yes
—
Volume
$86
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
0.5%
Polymarket 0.5%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Total Sets: O/U 2.5
Last price
0.5%
As of
Polled just now
Buy Yes
—
Sell Yes
—
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
0.5%
Polymarket 0.5%polled, 45s agoBest Yes 1¢ on Polymarket, $100 pays $10,000 (100x)
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Set 2 O/U 10.5
Last price
0.5%
As of
Polled just now
Buy Yes
1¢
Sell Yes
—
$100 on Yes pays
$10,000 (100x)
Trade this on Polymarket
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
0.1%
Polymarket 0.1%polled, 45s ago
Polymarket
Contract
Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
Last price
0.1%
As of
Polled just now
Buy Yes
—
Sell Yes
—
Volume
$2K
Trade this on Polymarket

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: atptour.com
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: ATP
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 Oct 30, 2026, 6:00 AM UTC on Polymarket and Nov 6, 2026, 6:30 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.

  • Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
  • Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5
  • Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5

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

Open on Polymarket ↗

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

Loading both order books…

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 "Almaty Open: Stefanos Tsitsipas vs James Duckworth". Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5 leads at 100%. Next is Almaty Open: Stefanos Tsitsipas vs James Duckworth Match O/U 22.5 at 100%. $553K has traded across 12 outcomes on Kalshi and Polymarket. The market is expected to resolve by Oct 30, 2026.

This market refers to the tennis match between Stefanos Tsitsipas and James Duckworth in the Almaty Open, originally scheduled for October 23, 2026 at 2:00AM ET. This market will resolve to 'Stefanos Tsitsipas' if Stefanos Tsitsipas advances against James Duckworth. This market will resolve to 'James Duckworth' if James Duckworth advances against Stefanos Tsitsipas. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 6, 2026, 11:59 PM ET (14 days after the scheduled start), this market will resolve to 50-50. If the match begins but is not completed, and one player advances due to the opponent's retirement, default, or disqualification, this market will resolve to the player who advances. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.

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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