The Prediction Markets

ATP Tennis: Brussels, Belgium Singles Winner

Full timeKickoff Waiting for the venues to settle
Traded
$2K
Venues
Polymarket
Prices updated
2 min ago
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What the markets expect

Jan-Lennard Struff 31.9%

Next is Arthur Fils at 20.2%. Only Polymarket lists this market, so there is no second price to compare.

Jan-Lennard Struff 31.9%Arthur Fils 20.2%Zizou Bergs 11%Francisco Cerundolo 10.3%Jiri Lehecka 10.2%3 others 16.4%

Odds by venue

Fair chance strips out each venue’s built-in margin (its prices add up to more than 100%), then blends the venues by how much has traded there, so the outcomes add up to 100%. 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 2 min ago. Ages are as of when this page was built.

  • Polymarket
Jan-Lennard Struff
31.9%
Polymarket 43.5%(31.9% fair)polled, 2 min agoBest Yes 87¢ on Polymarket, $100 pays $115 (1.15x)
Polymarket
Contract
Jan-Lennard Struff
Last price
43.5%
Fair, margin removed
31.9%
As of
Polled 2 min ago
Buy Yes
87¢
Sell Yes
—
$100 on Yes pays
$115 (1.15x)
Trade this on Polymarket
Arthur Fils
20.2%
Polymarket 27.5%(20.2% fair)polled, 2 min agoBest Yes 34¢ on Polymarket, $100 pays $294 (2.94x)
Polymarket
Contract
Arthur Fils
Last price
27.5%
Fair, margin removed
20.2%
As of
Polled 2 min ago
Buy Yes
34¢
Sell Yes
21¢
$100 on Yes pays
$294 (2.94x)
Volume
$341
Trade this on Polymarket
Zizou Bergs
11%
Polymarket 15%(11% fair)polled, 2 min agoBest Yes 28¢ on Polymarket, $100 pays $357 (3.57x)
Polymarket
Contract
Zizou Bergs
Last price
15%
Fair, margin removed
11%
As of
Polled 2 min ago
Buy Yes
28¢
Sell Yes
2¢
$100 on Yes pays
$357 (3.57x)
Trade this on Polymarket
Francisco Cerundolo
10.3%
Polymarket 14%(10.3% fair)polled, 2 min agoBest Yes 25¢ on Polymarket, $100 pays $400 (4.00x)
Polymarket
Contract
Francisco Cerundolo
Last price
14%
Fair, margin removed
10.3%
As of
Polled 2 min ago
Buy Yes
25¢
Sell Yes
3¢
$100 on Yes pays
$400 (4.00x)
Volume
$13
Trade this on Polymarket
Jiri Lehecka
10.2%
Polymarket 14%(10.3% fair)polled, 2 min agoBest Yes 27¢ on Polymarket, $100 pays $370 (3.70x)
Polymarket
Contract
Jiri Lehecka
Last price
14%
Fair, margin removed
10.3%
As of
Polled 2 min ago
Buy Yes
27¢
Sell Yes
1¢
$100 on Yes pays
$370 (3.70x)
Volume
$22
Trade this on Polymarket
Tallon Griekspoor
7.6%
Polymarket 10.4%(7.6% fair)polled, 2 min agoBest Yes 19.7¢ on Polymarket, $100 pays $508 (5.08x)
Polymarket
Contract
Tallon Griekspoor
Last price
10.4%
Fair, margin removed
7.6%
As of
Polled 2 min ago
Buy Yes
19.7¢
Sell Yes
1¢
$100 on Yes pays
$508 (5.08x)
Trade this on Polymarket
Alex Michelsen
6.6%
Polymarket 9%(6.6% fair)polled, 2 min agoBest Yes 17¢ on Polymarket, $100 pays $588 (5.88x)
Polymarket
Contract
Alex Michelsen
Last price
9%
Fair, margin removed
6.6%
As of
Polled 2 min ago
Buy Yes
17¢
Sell Yes
1¢
$100 on Yes pays
$588 (5.88x)
Volume
$69
Trade this on Polymarket
Clement Chidekh
2.2%
Polymarket 3%(2.2% fair)polled, 2 min agoBest Yes 6¢ on Polymarket, $100 pays $1,667 (16.7x)
Polymarket
Contract
Clement Chidekh
Last price
3%
Fair, margin removed
2.2%
As of
Polled 2 min ago
Buy Yes
6¢
Sell Yes
—
$100 on Yes pays
$1,667 (16.7x)
Trade this on Polymarket

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: atptour.com

How the odds have moved

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

  • Jan-Lennard Struff
  • Arthur Fils
  • Zizou Bergs

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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Best ask
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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.

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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 "ATP Tennis: Brussels, Belgium Singles Winner". Jan-Lennard Struff leads at 31.9%. Next is Arthur Fils at 20.2%. $2K has traded across 8 outcomes on Polymarket. The market is expected to resolve by Oct 26, 2026.

The 2026 Brussels, Belgium Singles tennis tournament is scheduled for October 17–25, 2026. This market will resolve to the player that wins the 2026 Brussels, Belgium Singles Men’s Singles Tournament. If at any point it becomes impossible for a listed player to win the 2026 Brussels, Belgium Singles Men’s Singles Tournament per the rules of the tournament, the corresponding market will resolve to "No". If a player who is not listed wins the 2026 Brussels, Belgium Singles Men’s Singles Tournament, this market will resolve to "Other". If the 2026 Brussels, Belgium Singles Men’s Singles Tournament is cancelled, postponed after November 8, 2026, 11:59 PM ET, or there is otherwise no winner declared within that timeframe, this market will resolve to "Other". The primary resolution source will be official information from ATP (https://www.atptour.com/en/scores/current); however, 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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