TOTAL VOLUME:
$134.2b
24H VOL:
$126,324,530
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,434,646,834
406,019
Markets across
30,401
events
MATCHED EVENTS:
2,689
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 30, 5:33 PM EST
Polymarket
In the upcoming US Open ATP singles match between Toby Samuel and Tomas Machac, scheduled for August 30, 2026 at 11:00AM ET: This market will resolve based on the final set score of the Toby Samuel vs. Tomas Machac match. This match is played in a best-of-5-sets format. The possible outcomes are 3-0, 3-1, “Not Completed”, and 3-2 in either direction. If the match is canceled (not played at all), or is delayed beyond 14 days from the scheduled date at 11:59 PM ET without completion, this market will resolve to 'Not Completed'. 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 'Not Completed' regardless of the set score at the time. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 'Not Completed'. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
In the upcoming US Open ATP singles match between Toby Samuel and Tomas Machac, scheduled for August 30, 2026 at 11:00AM ET: This market will resolve based on the final set score of the Toby Samuel vs. Tomas Machac match. This match is played in a best-of-5-sets format. The possible outcomes are 3-0, 3-1, “Not Completed”, and 3-2 in either direction. If the match is canceled (not played at all), or is delayed beyond 14 days from the scheduled date at 11:59 PM ET without completion, this market will resolve to 'Not Completed'. 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 'Not Completed' regardless of the set score at the time. If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 'Not Completed'. The primary resolution source will be official information from the ATP Tour. A consensus of credible reporting may also be used.
Prediction market odds in this market often differ from traditional sportsbook lines due to the granular nature of exact-score betting. While sportsbooks may offer broader match outcomes, prediction markets let traders speculate on precise scorelines, sometimes revealing sharper or more nuanced probabilities. The crowd-sourced pricing here can reflect detailed analysis or rapid updates that sportsbooks might not adjust as quickly, especially for niche or less widely followed events.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders manually set prices through buying and selling shares of possible outcomes, creating a dynamic market price. The current probability reflects the collective assessment of Polymarket participants about which exact score is most likely. As new insights, player form, or betting trends emerge, these prices can shift rapidly, offering a real-time barometer of expectations for the match.
This market resolves around Sep 6, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The final score reported by authoritative sports news sources or official match records will determine which exact score share holders receive, settling all positions based on the actual result.
Injuries, changes in player form, weather conditions, or strategic adjustments by coaches can all shift this market. Key moments such as recent match performances, practice updates, or even shifts in betting volume on Polymarket can cause prices to fluctuate. Traders will watch for any news that impacts the perceived likelihood of each possible scoreline as the event approaches.