TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Sep 2, 1:37 PM EST
Polymarket
This market tracks whether a total of more than 10.5 games will be played in the fourth set of the Brandon Nakashima versus Alex Michelsen match at the US Open ATP. Currently, Polymarket gives a 100.0% probability to “Nakashima vs. Michelsen: Set 4 Games O/U 10.5”. The resolution source for this market is the official ATP Tour website at https://www.atptour.com/en/scores/current. Keep an eye on the match itself, originally scheduled for September 2, 2026 at 11:00AM ET, as the outcome will depend on the number of games played in the fourth set if it is played.
This market refers to the tennis match between Brandon Nakashima and Alex Michelsen in the US Open ATP, originally scheduled for September 2, 2026 at 11:00AM ET. This market will resolve to 'Brandon Nakashima' if Brandon Nakashima advances against Alex Michelsen. This market will resolve to 'Alex Michelsen' if Alex Michelsen advances against Brandon Nakashima. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 16, 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 ATP Tour. A consensus of credible reporting may also be used.
On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders collectively set the odds through buying and selling shares, which determines the implied probability for each outcome. The current top chance percentage reflects the market’s view of the most likely result, adjusted continuously by participant activity. Volume of $792,842 indicates liquidity, showing how much trading has occurred. This decentralized pricing mechanism captures a snapshot of community sentiment rather than a single analyst’s forecast.
This market resolves around Sep 9, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result is determined by the official match conclusion, reflecting who wins the US Open encounter between the two players. No further analysis or interpretation is needed beyond confirming the final score from reliable sports news sources.
Injuries, player form, or significant tournament performances can shift this market leading up to resolution. Updates from practice sessions, media interviews, or weather conditions affecting the match may also influence trader sentiment. As the tournament unfolds, any development that changes perceptions of competitiveness or stamina will likely cause price adjustments on Polymarket, reflecting the latest information available to participants.