The Prediction Markets

European Open: Jan-Lennard Struff vs Zizou Bergs

Starts in 1 h 36 minKickoff
Traded
$10K
Venues
Polymarket, Kalshi
Prices updated
4 h ago
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What the markets expect

European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5 85.5%

Next is Zizou Bergs at 66%. The venues differ most on Struff (Polymarket 33.5%, Kalshi 35%), a 1.5-point gap.

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 h ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
85.5%
Polymarket 85.5%polled, 4 h agoBest Yes 93¢ on Polymarket, $100 pays $108 (1.08x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set 1 O/U 8.5
Last price
85.5%
As of
Polled 4 h ago
Buy Yes
93¢
Sell Yes
78¢
$100 on Yes pays
$108 (1.08x)
Trade this on Polymarket
Zizou Bergs
66%
Kalshi 66%polled, 4 h agoBest Yes 66¢ on Kalshi, $100 pays $152 (1.52x)
Kalshi
Contract
Zizou Bergs
Last price
66%
As of
Polled 4 h ago
Buy Yes
66¢
Sell Yes
65¢
$100 on Yes pays
$152 (1.52x)
Volume
$3K
Trade this on Kalshi
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
62.5%
Polymarket 62.5%polled, 4 h agoBest Yes 67¢ on Polymarket, $100 pays $149 (1.49x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Match O/U 21.5
Last price
62.5%
As of
Polled 4 h ago
Buy Yes
67¢
Sell Yes
58¢
$100 on Yes pays
$149 (1.49x)
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
61%
Polymarket 61%polled, 4 h agoBest Yes 67¢ on Polymarket, $100 pays $149 (1.49x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set 1 O/U 9.5
Last price
61%
As of
Polled 4 h ago
Buy Yes
67¢
Sell Yes
55¢
$100 on Yes pays
$149 (1.49x)
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
54.5%
Polymarket 54.5%polled, 4 h agoBest Yes 55¢ on Polymarket, $100 pays $182 (1.82x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Match O/U 22.5
Last price
54.5%
As of
Polled 4 h ago
Buy Yes
55¢
Sell Yes
54¢
$100 on Yes pays
$182 (1.82x)
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
52.5%
Polymarket 52.5%polled, 4 h agoBest Yes 53¢ on Polymarket, $100 pays $189 (1.89x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Game Spread +/-2.5
Last price
52.5%
As of
Polled 4 h ago
Buy Yes
53¢
Sell Yes
52¢
$100 on Yes pays
$189 (1.89x)
Volume
$2
Trade this on Polymarket
Completed Match
48%
Polymarket 48%polled, 4 h agoBest Yes 95¢ on Polymarket, $100 pays $105 (1.05x)
Polymarket
Contract
Completed Match
Last price
48%
As of
Polled 4 h ago
Buy Yes
95¢
Sell Yes
1¢
$100 on Yes pays
$105 (1.05x)
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
48%
Polymarket 48%polled, 4 h agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set 2 O/U 9.5
Last price
48%
As of
Polled 4 h ago
Buy Yes
96¢
Sell Yes
1¢
$100 on Yes pays
$104 (1.04x)
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
48%
Polymarket 48%polled, 4 h agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set 2 O/U 10.5
Last price
48%
As of
Polled 4 h ago
Buy Yes
96¢
Sell Yes
1¢
$100 on Yes pays
$104 (1.04x)
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
48%
Polymarket 48%polled, 4 h agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set 2 O/U 8.5
Last price
48%
As of
Polled 4 h ago
Buy Yes
96¢
Sell Yes
1¢
$100 on Yes pays
$104 (1.04x)
Trade this on Polymarket
Show 7 more outcomes
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
45.5%
Polymarket 45.5%polled, 4 h agoBest Yes 46¢ on Polymarket, $100 pays $217 (2.17x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Match O/U 23.5
Last price
45.5%
As of
Polled 4 h ago
Buy Yes
46¢
Sell Yes
45¢
$100 on Yes pays
$217 (2.17x)
Volume
$16
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
43.5%
Polymarket 43.5%polled, 4 h agoBest Yes 44¢ on Polymarket, $100 pays $227 (2.27x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
Last price
43.5%
As of
Polled 4 h ago
Buy Yes
44¢
Sell Yes
43¢
$100 on Yes pays
$227 (2.27x)
Volume
$650
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
38.5%
Polymarket 38.5%polled, 4 h agoBest Yes 40¢ on Polymarket, $100 pays $250 (2.50x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set 2 Winner
Last price
38.5%
As of
Polled 4 h ago
Buy Yes
40¢
Sell Yes
37¢
$100 on Yes pays
$250 (2.50x)
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
38%
Polymarket 38%polled, 4 h agoBest Yes 39¢ on Polymarket, $100 pays $256 (2.56x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Total Sets: O/U 2.5
Last price
38%
As of
Polled 4 h ago
Buy Yes
39¢
Sell Yes
37¢
$100 on Yes pays
$256 (2.56x)
Volume
$4
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
38%
Polymarket 38%polled, 4 h agoBest Yes 39¢ on Polymarket, $100 pays $256 (2.56x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set 1 Winner
Last price
38%
As of
Polled 4 h ago
Buy Yes
39¢
Sell Yes
37¢
$100 on Yes pays
$256 (2.56x)
Trade this on Polymarket
European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
37.5%
Polymarket 37.5%polled, 4 h agoBest Yes 39¢ on Polymarket, $100 pays $256 (2.56x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs Set 1 O/U 10.5
Last price
37.5%
As of
Polled 4 h ago
Buy Yes
39¢
Sell Yes
36¢
$100 on Yes pays
$256 (2.56x)
Trade this on Polymarket
Struff
33.9%
Polymarket 33.5%polled, 4 h agoKalshi 35%polled, 4 h agoBest Yes 34¢ on Polymarket, $100 pays $294 (2.94x)
Polymarket
Contract
European Open: Jan-Lennard Struff vs Zizou Bergs
Last price
33.5%
As of
Polled 4 h ago
Buy Yes
34¢
Sell Yes
33¢
$100 on Yes pays
$294 (2.94x)
Volume
$6K
Trade this on Polymarket
Kalshi
Contract
Jan-Lennard Struff
Last price
35%
As of
Polled 4 h ago
Buy Yes
35¢
Sell Yes
34¢
$100 on Yes pays
$286 (2.86x)
Volume
$500
Trade this on Kalshi
Partial parity

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

Prices on these venues are 4 h old, too old to show an executable spread.

Venue prices are 4 h old, so we are not showing a cross-venue spread. Check each venue for current prices. Find markets with fresh 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, 6:00 PM UTC on Polymarket and Nov 6, 2026, 5:40 PM 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.

  • European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5
  • Zizou Bergs
  • European Open: Jan-Lennard Struff vs Zizou Bergs 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

Open on Polymarket ↗

Top of book

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Best bid
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Spread
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Best ask
—

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Depth · top 8 levels

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Recent trades

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Kalshi

Kalshi doesn’t list European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5 for this event.

What your stake buys

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

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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 "European Open: Jan-Lennard Struff vs Zizou Bergs". European Open: Jan-Lennard Struff vs Zizou Bergs Set Handicap +/-1.5 leads at 85.5%. Next is Zizou Bergs at 66%. $10K has traded across 17 outcomes on Polymarket and Kalshi. The market is expected to resolve by Oct 30, 2026.

This market refers to the tennis match between Jan-Lennard Struff and Zizou Bergs in the European Open, originally scheduled for October 23, 2026 at 2:00PM ET. This market will resolve to 'Jan-Lennard Struff' if Jan-Lennard Struff advances against Zizou Bergs. This market will resolve to 'Zizou Bergs' if Zizou Bergs advances against Jan-Lennard Struff. 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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