Tennis

Sakamoto vs Harris: who will win?

Settled: Billy Harris

Result posted: Fri Oct 30, 12:19 AM

Trading stopped on Polymarket: Fri Oct 30, 12:19 AM ET

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The short version

Rei Sakamoto and Billy Harris play a tennis match at the Seoul, scheduled for October 29, 2026 at 9:00 PM ET.

Possible results

Rei SakamotoRei Sakamoto wins and moves on.No
What has to happen
Rei Sakamoto advances against Billy Harris.
Billy HarrisBilly Harris wins and moves on.Yes
What has to happen
Billy Harris advances against Rei Sakamoto.

The one trap

If the match is canceled, ends in a tie, or still has no winner by November 12, 2026, the market settles 50-50 and every share pays 50¢.

See all fine print

If a player stops partway through (retires), or is defaulted or disqualified, the player who moves on wins the market.
If a player pulls out before the match starts (a walkover), the market settles 50-50.
The official result comes from the ATP Tour. Trusted news reports can also be used.

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The details

Rule note: full game including overtimeSettled by ATP official

Fine-print risk

Low (10/100)

settles on the condition as written

Pro adds the exact price, today’s change in points, buyers vs sellers in dollars, the price chart and every recorded move. See Pro

Official source: settlement runs on ATP official results; credible reporting as a last resort. Posts the final result after the game. No recorded moves for this market yet.
Fine print: Settles on the official final result as played, overtime included. Postponed games stay open until completed; cancellations follow the stated fallback. Deadline: Thu, Oct 29, 2026, 9:00 PM ET.

Source named: ATP official (not a tracked official feed, no release history)

Standardized read of public order book, official-source and contract-rule data, identical for every viewer. It describes the data and is not a recommendation. The venue’s published rules control settlement.

Full rules text on file (Polymarket)

This market refers to the tennis match between Rei Sakamoto and Billy Harris in the Seoul, originally scheduled for October 29, 2026 at 9:00PM ET. This market will resolve to 'Rei Sakamoto' if Rei Sakamoto advances against Billy Harris. This market will resolve to 'Billy Harris' if Billy Harris advances against Rei Sakamoto. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by November 12, 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.

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