TOTAL VOLUME:
$154.4b
24H VOL:
$290,393,159
24H TRANSACTIONS:
2,984,640,614
OPEN INTEREST:
$1,944,100,805
420,493
Markets across
40,511
events
MATCHED EVENTS:
4,612
PLATFORM COVERAGE:
5
Polymarket:
37%
VS.
Kalshi:
63%
Closed: Oct 27, 9:50 AM EST
Polymarket
This market refers to the tennis match between Jelle Sels and Billy Blaydes in the M25 Sheffield, Main Draw, originally scheduled for October 27, 2026 at 6:00AM ET. This market will resolve to 'Jelle Sels' if Jelle Sels advances against Billy Blaydes. This market will resolve to 'Billy Blaydes' if Billy Blaydes advances against Jelle Sels. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 10, 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 Jelle Sels and Billy Blaydes in the M25 Sheffield, Main Draw, originally scheduled for October 27, 2026 at 6:00AM ET. This market will resolve to 'Jelle Sels' if Jelle Sels advances against Billy Blaydes. This market will resolve to 'Billy Blaydes' if Billy Blaydes advances against Jelle Sels. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 10, 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.
Often, prediction market odds reflect a wisdom-of-the-crowd effect, potentially differing from traditional sportsbook odds. Sportsbooks may set initial lines based on power rankings and expert analysis, while this market allows anyone to trade on their beliefs. If a significant number of people believe a sportsbook is mispricing the fight, they can express that view by trading in this market, driving the odds closer to what the crowd perceives as the true probability. It's common to see discrepancies, especially before significant news or events impact perceptions of the fighters.
On Polymarket, this market is priced through a continuous auction mechanism. Traders buy and sell shares representing their belief in the likelihood of each outcome. As more shares are bought for a particular outcome, its price increases, reflecting a higher implied probability. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price of a 'yes' share (Sels wins) or a 'no' share (Blaydes wins) indicates the market's current assessment of that fighter's chances. This dynamic pricing allows the market to quickly incorporate new information and adjust expectations.
This market resolves around Nov 3, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The official result of the Sels vs Blaydes fight, as declared by the relevant sporting authority, will determine the winning outcome. The platform will verify the result against widely available and trusted sources to ensure an accurate and impartial resolution. Traders holding shares in the winning outcome will be entitled to a payout, while those holding shares in the losing outcome will forfeit their stake.
Several factors could significantly impact the odds in this market. Any news regarding fighter injuries, changes in training regimens, or even pre-fight press conference statements could shift market sentiment. Unexpected betting patterns from large players could also cause movement. Furthermore, analysis from MMA experts and updated fight previews could influence traders’ beliefs. Public perception of each fighter’s recent performance and overall form will also play a role in how this market evolves leading up to Nov 3, 2026.