TOTAL VOLUME:
$134b
24H VOL:
$87,997,338
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,395,155,069
395,664
Markets across
30,076
events
MATCHED EVENTS:
2,626
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 22, 2:33 PM EST
Polymarket
This market tracks whether the tennis match between Alejandro Tabilo and Tiago Torres at the Estoril Open will have more than 21.5 games, with the current probability on Polymarket set at 100%. The resolution will be based on official results from ATP Tour. The match is scheduled to conclude by July 29, 2026, and this date marks the end of the betting period and the final signal to watch for resolution.
This market refers to the tennis match between Alejandro Tabilo and Tiago Torres in the Estoril Open, originally scheduled for July 22, 2026 at 6:00AM ET. This market will resolve to 'Alejandro Tabilo' if Alejandro Tabilo advances against Tiago Torres. This market will resolve to 'Tiago Torres' if Tiago Torres advances against Alejandro Tabilo. 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 pricing mechanisms. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets like this one are priced by traders themselves—creating a crowdsourced probability estimate. Prediction markets can sometimes offer sharper, more efficient pricing because traders have direct financial incentive to identify mispricings. However, sportsbooks may move faster on breaking news or injury reports. Comparing the two can reveal valuable insights: if this market's implied probability differs significantly from a major sportsbook's line, it may signal where informed traders see an edge.
On Polymarket, this market is priced through an automated market maker mechanism where traders buy and sell outcome shares directly. 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 ratio of shares held in the pool, and as traders place orders, the price adjusts in real time. Higher demand for one outcome pushes its price up and implied probability higher, while lower demand pushes it down. This continuous repricing mechanism ensures the market stays responsive to new information and trader conviction throughout the event window.
This market resolves around Jul 29, 2026, once the match concludes and the result is verifiable from credible public reporting. The outcome will be confirmed based on the official result of the tennis match—specifically, which player wins the contest. Until that point, prices will fluctuate as traders update their expectations based on player form, court conditions, injury news, and other relevant signals. Resolution is automatic once the event is finalized and confirmed through established sports data sources.
Several factors could shift prices significantly before Jul 29, 2026. Injury announcements or withdrawal news involving either player would trigger sharp repricing. Recent match results, ranking changes, or head-to-head history releases may influence trader positioning. Court surface conditions and weather forecasts closer to match day often matter in tennis. Betting line movement at major sportsbooks can also signal where professional oddsmakers see value, prompting traders to adjust. Any coaching changes, player statements, or performance updates in the lead-up to the event could move this market as new information becomes available.