TOTAL VOLUME:
$154.6b
24H VOL:
$333,432,169
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,971,286,090
419,492
Markets across
40,634
events
MATCHED EVENTS:
4,654
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 20, 10:38 AM EST
Polymarket
This market refers to the tennis match between Mario Arce Fernandez and Leo Deflandre in the M15 Monastir, Qualifying, originally scheduled for October 20, 2026 at 5:30AM ET. This market will resolve to 'Mario Arce Fernandez' if Mario Arce Fernandez advances against Leo Deflandre. This market will resolve to 'Leo Deflandre' if Leo Deflandre advances against Mario Arce Fernandez. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 3, 2026, 11:59 PM ET (14 days after the scheduled start), 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 Mario Arce Fernandez and Leo Deflandre in the M15 Monastir, Qualifying, originally scheduled for October 20, 2026 at 5:30AM ET. This market will resolve to 'Mario Arce Fernandez' if Mario Arce Fernandez advances against Leo Deflandre. This market will resolve to 'Leo Deflandre' if Leo Deflandre advances against Mario Arce Fernandez. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 3, 2026, 11:59 PM ET (14 days after the scheduled start), 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 often reflect the collective wisdom of a diverse group of bettors, potentially offering a different perspective than traditional sportsbooks. Sportsbooks set initial lines based on their own analysis, while this market’s odds are determined by individuals trading based on their own research and insights. Discrepancies can arise due to differing information, biases, or simply varying interpretations of the players’ form and potential. It’s common to see prediction markets move independently of sportsbook lines, especially as new information becomes available.
On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in each outcome. The price of a share directly corresponds to the probability of that outcome occurring, as perceived by the market participants. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The more traders believe a player will win, the higher the price of shares representing that player. This dynamic pricing reflects the aggregated sentiment of all traders, creating a constantly evolving forecast for the Monastir tennis match.
This market resolves around Oct 27, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The resolution will be based on the official result of the Monastir tennis match between Mario Arce Fernandez and Leo Deflandre, as declared by the tournament organizers. The player who wins the match will be considered the winning outcome for this market. The platform will verify the result against publicly available sources to ensure accuracy and transparency.
Several factors could influence the trading activity in this market. Any news regarding player injuries, changes in playing conditions, or updated rankings could shift the probabilities. Unexpected results in prior matches for either player, or even comments from analysts offering insights into their form, could also drive movement. Furthermore, large trades by individual participants on Polymarket could temporarily impact the price, although the market typically self-corrects as more information becomes available and more traders participate.