Live odds · sports
US Open ATP: Frances Tiafoe vs Alex Michelsen
This market refers to the tennis match between Frances Tiafoe and Alex Michelsen in the US Open ATP, originally scheduled for September 8, 2026 at 11:30AM ET. This market will resolve to 'Frances Tiafoe' if Frances Tiafoe advances against Alex Michelsen. This market will resolve to 'Alex Michelsen' if Alex Michelsen advances against Frances Tiafoe. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 22, 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.
Quick answer
As of today, "US Open ATP: Frances Tiafoe vs Alex Michelsen" trades at 100% YES on Polymarket (0% NO), with $6.3M in total volume. Eligible Florida traders can also find related event contracts on Kalshi, which is CFTC-regulated and settles in USD.
Top outcome
US Open ATP: Frances Tiafoe vs Alex Michelsen
24h volume
$6.3M
Total volume
$6.3M
Resolves in
7 days
Sep 15, 2026
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
Live odds
| Outcome | YES | |
|---|---|---|
| US Open ATP: Frances Tiafoe vs Alex Michelsen | 100¢ | Trade |
| US Open ATP: Completed Match: Frances Tiafoe vs Alex Michelsen | 100¢ | Trade |
| Game Spread: Tiafoe (-1.5) vs Michelsen (+1.5) | 0¢ | Trade |
Odds from Polymarket's public API, cached 5 minutes. Refresh for the latest.
Take a position
Polymarket US is our #1 pick for this market when eligible Florida traders want deep books, USD settlement and an advertised $0 platform fee. Kalshi offers web access and a separate $25/$25 new-user offer for eligible users.
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions at kalshi.com/tc/500. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information.
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