TOTAL VOLUME:
$134b
24H VOL:
$103,397,351
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,410,176,180
399,592
Markets across
30,097
events
MATCHED EVENTS:
2,622
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jun 25, 6:00 AM EST
Polymarket
This market refers to the tennis match between Sebastian Ofner and Roberto Carballes Baena in the Parma, originally scheduled for June 18, 2026 at 6:00AM ET. This market will resolve to 'Sebastian Ofner' if Sebastian Ofner advances against Roberto Carballes Baena. This market will resolve to 'Roberto Carballes Baena' if Roberto Carballes Baena advances against Sebastian Ofner. 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 ATP Tour. A consensus of credible reporting may also be used.
This market refers to the tennis match between Sebastian Ofner and Roberto Carballes Baena in the Parma, originally scheduled for June 18, 2026 at 6:00AM ET. This market will resolve to 'Sebastian Ofner' if Sebastian Ofner advances against Roberto Carballes Baena. This market will resolve to 'Roberto Carballes Baena' if Roberto Carballes Baena advances against Sebastian Ofner. 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 ATP Tour. A consensus of credible reporting may also be used.
Prediction market odds and sportsbook odds often diverge because they reflect different incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets are driven purely by trader belief and capital allocation. This market may show materially different implied probabilities than traditional sports betting sites, especially as new information emerges or as the event date approaches. Comparing the two can reveal where professional bettors and retail traders disagree on the likely outcome.
On Polymarket, traders set prices by buying and selling outcome shares in an automated market maker (AMM) system. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of each share reflects the collective belief of all participants at that moment—higher prices signal stronger confidence in that outcome. As new match information, player form, or injury reports surface, traders adjust their positions, and prices move accordingly. This continuous price discovery mechanism ensures the market remains responsive to real-world developments.
This market resolves around Jun 25, 2026, once the match concludes and the result is verified against credible public sources. The outcome is determined by the official match result—which player wins the contest. No ambiguity or dispute resolution is typically needed for professional tennis matches, as the winner is immediately clear from the official ATP record and broadcast coverage.
Several factors can shift this market significantly before Jun 25, 2026. Injury announcements or withdrawal news involving either player would trigger sharp repricing. Recent tournament results, head-to-head records, and surface-specific form updates often drive trader repositioning. Court conditions, weather forecasts, and lineup changes in the broader tournament draw can also influence perceived match difficulty. Additionally, betting action from professional syndicates or sudden volume spikes may signal new information entering the market.