TOTAL VOLUME:

$134.2b

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$134,145,987

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2,388,728,490

OPEN INTEREST:

$1,441,166,947

406,422

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MATCHED EVENTS:

2,688

PLATFORM COVERAGE:

5

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Kalshi:

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Casper Ruud vs Joao Fonseca: Set 3 Winner
kalshi

Casper Ruud vs Joao Fonseca: Set 3 Winner

Volume:
$99,089

Casper Ruud

 - Kalshi

Casper Ruud - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved May 31, 2026

Closed: May 31, 5:51 PM EST

kalshi

Kalshi

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Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Casper Ruud

View
100%
Yes 100¢No 0¢
100¢
N/A
$52,070
N/A
N/A
$36,455
Settled
Yes
kalshi

Joao Fonseca

0%
Yes 0¢No 100¢
100¢
N/A
$47,019
N/A
N/A
$39,039
Settled
No
Total markets: 2

Description

Two professional tennis players compete in the Round of 16 at the 2026 French Open Men's Singles tournament. The outcome depends on who wins the third set of their match.

Frequently asked questions

Prediction market odds on Kalshi often differ from traditional sportsbook odds because they reflect real-time trader consensus rather than bookmaker pricing models. Sportsbooks typically build in fixed margins and adjust lines based on liability management, while prediction markets aggregate distributed beliefs from many participants. For the Casper Ruud vs Joao Fonseca Set 3 Winner event, comparing Kalshi prices to major sportsbooks can reveal whether the market is pricing in factors—such as player form, court conditions, or recent head-to-head data—that sportsbooks may lag on or weight differently.

On Kalshi, the Casper Ruud vs Joao Fonseca: Set 3 Winner contract is priced between 0 and 100 cents, where each cent represents a 1% implied probability. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Traders buy or sell shares based on their belief in each outcome, and the market price converges toward the true probability as more capital flows in. Kalshi's binary structure makes it straightforward to compare your conviction level directly against the market price, with tighter spreads typically appearing as volume and interest in the match increase closer to the event date.

The market resolves on May 31, 2026. Resolution is determined by the official result of the third set in the Casper Ruud vs Joao Fonseca tennis match. The outcome is binary: either Ruud or Fonseca will be credited as the set winner based on the match scorecard. Traders should monitor official tournament records and verified match results to confirm which outcome the market will settle to when the event concludes.

Several factors could shift odds for this Set 3 Winner market. Player injury reports or withdrawal announcements would have immediate impact. Recent tournament performance, court surface suitability, head-to-head records, and player form leading up to the match all influence trader positioning. Weather conditions on match day, first-set momentum, and any coaching or tactical adjustments visible during Sets 1 and 2 will likely trigger repricing. News about player fitness, mental state, or external pressures can also move the market as traders update their probability estimates closer to the third set.