The Prediction Markets

Jan-Lennard Struff vs Casper Ruud: Total Games

Starts in 4 h 7 minKickoff
Traded
$9K
Venues
Polymarket, Kalshi
Prices updated
3 min ago
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What the markets expect

Over 18.5 games 88%

Next is Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5 at 85%. 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, the oldest 4 min ago. Ages are as of when this page was built.

  • Polymarket
  • Kalshi
Over 18.5 games
88%
Kalshi 88%polled, 4 min agoBest Yes 88¢ on Kalshi, $100 pays $114 (1.14x)
Kalshi
Contract
Over 18.5 games
Last price
88%
As of
Polled 4 min ago
Buy Yes
88¢
Sell Yes
85¢
$100 on Yes pays
$114 (1.14x)
Volume
$25
Trade this on Kalshi
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
85%
Polymarket 85%polled, 3 min agoBest Yes 87¢ on Polymarket, $100 pays $115 (1.15x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Set 1 O/U 8.5
Last price
85%
As of
Polled 3 min ago
Buy Yes
87¢
Sell Yes
83¢
$100 on Yes pays
$115 (1.15x)
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
74%
Polymarket 74%polled, 3 min agoBest Yes 97¢ on Polymarket, $100 pays $103 (1.03x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Set 1 O/U 9.5
Last price
74%
As of
Polled 3 min ago
Buy Yes
97¢
Sell Yes
51¢
$100 on Yes pays
$103 (1.03x)
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
64%
Polymarket 64%polled, 3 min agoBest Yes 68¢ on Polymarket, $100 pays $147 (1.47x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Match O/U 21.5
Last price
64%
As of
Polled 3 min ago
Buy Yes
68¢
Sell Yes
60¢
$100 on Yes pays
$147 (1.47x)
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
57%
Polymarket 57%polled, 3 min agoBest Yes 58¢ on Polymarket, $100 pays $172 (1.72x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Match O/U 22.5
Last price
57%
As of
Polled 3 min ago
Buy Yes
58¢
Sell Yes
56¢
$100 on Yes pays
$172 (1.72x)
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
50.5%
Polymarket 50.5%polled, 3 min agoBest Yes 51¢ on Polymarket, $100 pays $196 (1.96x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
Last price
50.5%
As of
Polled 3 min ago
Buy Yes
51¢
Sell Yes
50¢
$100 on Yes pays
$196 (1.96x)
Volume
$4K
Trade this on Polymarket
Over 23.5 games
50%
Kalshi 50%polled, 4 min agoBest Yes 50¢ on Kalshi, $100 pays $200 (2.00x)
Kalshi
Contract
Over 23.5 games
Last price
50%
As of
Polled 4 min ago
Buy Yes
50¢
Sell Yes
49¢
$100 on Yes pays
$200 (2.00x)
Volume
$3K
Trade this on Kalshi
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
49%
Polymarket 49%polled, 3 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud 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
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
49%
Polymarket 49%polled, 3 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud 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
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
49%
Polymarket 49%polled, 3 min agoBest Yes 98¢ on Polymarket, $100 pays $102 (1.02x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud 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
Show 9 more outcomes
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
49%
Polymarket 49%polled, 3 min agoBest Yes 50¢ on Polymarket, $100 pays $200 (2.00x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Match O/U 23.5
Last price
49%
As of
Polled 3 min ago
Buy Yes
50¢
Sell Yes
48¢
$100 on Yes pays
$200 (2.00x)
Volume
$6
Trade this on Polymarket
Completed Match
48.5%
Polymarket 48.5%polled, 3 min agoBest Yes 96¢ on Polymarket, $100 pays $104 (1.04x)
Polymarket
Contract
Completed Match
Last price
48.5%
As of
Polled 3 min ago
Buy Yes
96¢
Sell Yes
1¢
$100 on Yes pays
$104 (1.04x)
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
42.5%
Polymarket 42.5%polled, 3 min agoBest Yes 44¢ on Polymarket, $100 pays $227 (2.27x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Total Sets: O/U 2.5
Last price
42.5%
As of
Polled 3 min ago
Buy Yes
44¢
Sell Yes
41¢
$100 on Yes pays
$227 (2.27x)
Volume
$3
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
41%
Polymarket 41%polled, 3 min agoBest Yes 42¢ on Polymarket, $100 pays $238 (2.38x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Set 1 Winner
Last price
41%
As of
Polled 3 min ago
Buy Yes
42¢
Sell Yes
40¢
$100 on Yes pays
$238 (2.38x)
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
40%
Polymarket 40%polled, 3 min agoBest Yes 41¢ on Polymarket, $100 pays $244 (2.44x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Set 2 Winner
Last price
40%
As of
Polled 3 min ago
Buy Yes
41¢
Sell Yes
39¢
$100 on Yes pays
$244 (2.44x)
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
37.5%
Polymarket 37.5%polled, 3 min agoBest Yes 38¢ on Polymarket, $100 pays $263 (2.63x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Set Handicap +/-1.5
Last price
37.5%
As of
Polled 3 min ago
Buy Yes
38¢
Sell Yes
37¢
$100 on Yes pays
$263 (2.63x)
Volume
$42
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
36.5%
Polymarket 36.5%polled, 3 min agoBest Yes 38¢ on Polymarket, $100 pays $263 (2.63x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Set 1 O/U 10.5
Last price
36.5%
As of
Polled 3 min ago
Buy Yes
38¢
Sell Yes
35¢
$100 on Yes pays
$263 (2.63x)
Trade this on Polymarket
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
35.5%
Polymarket 35.5%polled, 3 min agoBest Yes 36¢ on Polymarket, $100 pays $278 (2.78x)
Polymarket
Contract
Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud
Last price
35.5%
As of
Polled 3 min ago
Buy Yes
36¢
Sell Yes
35¢
$100 on Yes pays
$278 (2.78x)
Volume
$2K
Trade this on Polymarket
Over 28.5 games
33.5%
Kalshi 33.5%polled, 4 min agoBest Yes 34¢ on Kalshi, $100 pays $294 (2.94x)
Kalshi
Contract
Over 28.5 games
Last price
33.5%
As of
Polled 4 min ago
Buy Yes
34¢
Sell Yes
33¢
$100 on Yes pays
$294 (2.94x)
Trade this on Kalshi

Who resolves this market

Polymarket
Polymarket resolves via:
UMA optimistic oracle, source: atptour.com
Kalshi
Kalshi resolves via:
Kalshi (CFTC-regulated exchange), source: ATP

How the odds have moved

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

  • Over 18.5 games
  • Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5
  • Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5

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 Over 18.5 games 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 "Jan-Lennard Struff vs Casper Ruud: Total Games". Over 18.5 games leads at 88%. Next is Rolex Paris Masters: Jan-Lennard Struff vs Casper Ruud Game Spread +/-2.5 at 85%. $9K has traded across 19 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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