TOTAL VOLUME:
$134.2b
24H VOL:
$134,145,987
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,441,166,947
406,422
Markets across
30,383
events
MATCHED EVENTS:
2,688
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: May 31, 5:51 PM EST
Kalshi
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.
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.