TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 6, 10:00 AM EST
Polymarket
This market refers to the tennis match between Jannik Opitz and Niels Ratiu in the ITF Men Nivelles, originally scheduled for June 29, 2026 at 10:00AM ET. This market will resolve to 'Jannik Opitz' if Jannik Opitz advances against Niels Ratiu. This market will resolve to 'Niels Ratiu' if Niels Ratiu advances against Jannik Opitz. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
This market refers to the tennis match between Jannik Opitz and Niels Ratiu in the ITF Men Nivelles, originally scheduled for June 29, 2026 at 10:00AM ET. This market will resolve to 'Jannik Opitz' if Jannik Opitz advances against Niels Ratiu. This market will resolve to 'Niels Ratiu' if Niels Ratiu advances against Jannik Opitz. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set odds to balance their book and lock in profit margins, while prediction markets like this one are driven by trader consensus and real-money conviction. Traders here are directly exposed to the outcome, which can surface information faster than traditional oddsmakers incorporate it. Comparing this market's implied probability to major sportsbook lines can reveal where the two communities disagree on the likely winner.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each outcome reflects the collective assessment of all active traders, with shares trading between 0 and 100 cents based on perceived probability. As new information emerges or trading volume shifts, prices adjust in real time. This mechanism ensures that the market continuously incorporates fresh signals and trader conviction, making the price a dynamic consensus estimate of the match result.
This market resolves around Jul 6, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official match result, ensuring accuracy and fairness for all traders. Until that point, prices may fluctuate as new developments, player form, or other relevant information surfaces. Resolution is final once the event is settled, and all positions are paid out according to the winning outcome.
Several factors could shift prices in this market before resolution. Player injury announcements, recent tournament performance, head-to-head records, or court surface conditions specific to Nivelles may trigger trader repositioning. Changes in player ranking or fitness updates closer to the match date could also influence sentiment. Media coverage highlighting one player's form or tactical advantages may prompt buying or selling pressure. Even broader factors like player motivation or external circumstances affecting either competitor could move the implied probability as traders reassess their conviction.