The Prediction Markets

Griekspoor vs Lehecka

Starts in 12 hKickoff
Traded
$30K
Venues
Polymarket, Kalshi
Prices updated
just now
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What the markets expect

Jiri Lehecka 72%

Next is European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 at 59.5%. 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 4 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Jiri Lehecka
72%
Kalshi 72%polled, 22s agoBest Yes 72¢ on Kalshi, $100 pays $139 (1.39x)
Kalshi
Contract
Jiri Lehecka
Last price
72%
As of
Polled just now
Buy Yes
72¢
Sell Yes
70¢
$100 on Yes pays
$139 (1.39x)
Volume
$26K
Trade this on Kalshi
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
59.5%
Polymarket 59.5%polled, 4 min agoBest Yes 60¢ on Polymarket, $100 pays $167 (1.67x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 22.5
Last price
59.5%
As of
Polled 4 min ago
Buy Yes
60¢
Sell Yes
59¢
$100 on Yes pays
$167 (1.67x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
52%
Polymarket 52%polled, 4 min agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 21.5
Last price
52%
As of
Polled 4 min ago
Buy Yes
96¢
Sell Yes
8¢
$100 on Yes pays
$104 (1.04x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
50%
Polymarket 50%polled, 4 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 Winner
Last price
50%
As of
Polled 4 min ago
Buy Yes
98¢
Sell Yes
2¢
$100 on Yes pays
$102 (1.02x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
49.5%
Polymarket 49.5%polled, 4 min agoBest Yes 50¢ on Polymarket, $100 pays $200 (2.00x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Match O/U 23.5
Last price
49.5%
As of
Polled 4 min ago
Buy Yes
50¢
Sell Yes
49¢
$100 on Yes pays
$200 (2.00x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
48.5%
Polymarket 48.5%polled, 4 min agoBest Yes 97¢ on Polymarket, $100 pays $103 (1.03x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 8.5
Last price
48.5%
As of
Polled 4 min ago
Buy Yes
97¢
Sell Yes
80¢
$100 on Yes pays
$103 (1.03x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
48.5%
Polymarket 48.5%polled, 4 min agoBest Yes 97¢ on Polymarket, $100 pays $103 (1.03x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 9.5
Last price
48.5%
As of
Polled 4 min ago
Buy Yes
97¢
Sell Yes
59¢
$100 on Yes pays
$103 (1.03x)
Trade this on Polymarket
Completed Match
48%
Polymarket 48%polled, 4 min agoBest Yes 95¢ on Polymarket, $100 pays $105 (1.05x)
Polymarket
Contract
Completed Match
Last price
48%
As of
Polled 4 min ago
Buy Yes
95¢
Sell Yes
1¢
$100 on Yes pays
$105 (1.05x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
48%
Polymarket 48%polled, 4 min agoBest Yes 95¢ on Polymarket, $100 pays $105 (1.05x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 8.5
Last price
48%
As of
Polled 4 min ago
Buy Yes
95¢
Sell Yes
1¢
$100 on Yes pays
$105 (1.05x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
48%
Polymarket 48%polled, 4 min agoBest Yes 95¢ on Polymarket, $100 pays $105 (1.05x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 9.5
Last price
48%
As of
Polled 4 min ago
Buy Yes
95¢
Sell Yes
1¢
$100 on Yes pays
$105 (1.05x)
Trade this on Polymarket
Show 7 more outcomes
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
47.5%
Polymarket 47.5%polled, 4 min agoBest Yes 95¢ on Polymarket, $100 pays $105 (1.05x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set 2 O/U 10.5
Last price
47.5%
As of
Polled 4 min ago
Buy Yes
95¢
Sell Yes
1¢
$100 on Yes pays
$105 (1.05x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
46%
Polymarket 46%polled, 4 min agoBest Yes 47¢ on Polymarket, $100 pays $213 (2.13x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
Last price
46%
As of
Polled 4 min ago
Buy Yes
47¢
Sell Yes
45¢
$100 on Yes pays
$213 (2.13x)
Volume
$65
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
38.5%
Polymarket 38.5%polled, 4 min agoBest Yes 40¢ on Polymarket, $100 pays $250 (2.50x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Game Spread +/-3.5
Last price
38.5%
As of
Polled 4 min ago
Buy Yes
40¢
Sell Yes
37¢
$100 on Yes pays
$250 (2.50x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
38%
Polymarket 38%polled, 4 min agoBest Yes 39¢ on Polymarket, $100 pays $256 (2.56x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 O/U 10.5
Last price
38%
As of
Polled 4 min ago
Buy Yes
39¢
Sell Yes
37¢
$100 on Yes pays
$256 (2.56x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
37%
Polymarket 37%polled, 4 min agoBest Yes 38¢ on Polymarket, $100 pays $263 (2.63x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Total Sets: O/U 2.5
Last price
37%
As of
Polled 4 min ago
Buy Yes
38¢
Sell Yes
36¢
$100 on Yes pays
$263 (2.63x)
Trade this on Polymarket
European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
32%
Polymarket 32%polled, 4 min agoBest Yes 33¢ on Polymarket, $100 pays $303 (3.03x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka Set 1 Winner
Last price
32%
As of
Polled 4 min ago
Buy Yes
33¢
Sell Yes
31¢
$100 on Yes pays
$303 (3.03x)
Volume
$10
Trade this on Polymarket
Griekspoor
28.6%
Polymarket 28.5%polled, 4 min agoKalshi 29%polled, 22s agoBest Yes 29¢ on Polymarket, $100 pays $345 (3.45x)
Polymarket
Contract
European Open: Tallon Griekspoor vs Jiri Lehecka
Last price
28.5%
As of
Polled 4 min ago
Buy Yes
29¢
Sell Yes
28¢
$100 on Yes pays
$345 (3.45x)
Volume
$4K
Trade this on Polymarket
Kalshi
Contract
Tallon Griekspoor
Last price
29%
As of
Polled just now
Buy Yes
29¢
Sell Yes
28¢
$100 on Yes pays
$345 (3.45x)
Volume
$546
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 28¢, at or below the cheapest ask of 29¢.

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: 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, 2:00 PM UTC on Polymarket and Nov 6, 2026, 11:30 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.

  • Jiri Lehecka
  • European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5
  • European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5

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 Jiri Lehecka 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 "Griekspoor vs Lehecka". Jiri Lehecka leads at 72%. Next is European Open: Tallon Griekspoor vs Jiri Lehecka Set Handicap +/-1.5 at 59.5%. $30K has traded across 17 outcomes on Kalshi and Polymarket. The market is expected to resolve by Nov 6, 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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