Seoul: Rei Sakamoto vs Billy Harris Odds
This market has resolved: Billy Harris. Final prices are below.
| Outcome | Chance | Odds | 24h |
|---|---|---|---|
| Rei Sakamoto vs Billy Harris | 0% | — | ▼ 77 |
| Completed Match | 0% | — | ▼ 52 |
| Seoul: Rei Sakamoto vs Billy Harris Set 1 Winner | 50% | -100 | ▼ 2 |
| Seoul: Rei Sakamoto vs Billy Harris Set 2 Winner | 50% | -100 | — |
| Seoul: Rei Sakamoto vs Billy Harris Total Sets: O/U 2.5 | 50% | -100 | ▲ 14 |
| Seoul: Rei Sakamoto vs Billy Harris Set 1 O/U 8.5 | 50% | -100 | ▼ 27 |
| Seoul: Rei Sakamoto vs Billy Harris Set 1 O/U 9.5 | 50% | -100 | ▲ 1 |
| Seoul: Rei Sakamoto vs Billy Harris Set 1 O/U 10.5 | 50% | -100 | ▲ 20 |
| Seoul: Rei Sakamoto vs Billy Harris Set 2 O/U 8.5 | 50% | -100 | ▼ 19 |
| Seoul: Rei Sakamoto vs Billy Harris Set 2 O/U 9.5 | 50% | -100 | ▲ 1 |
| Seoul: Rei Sakamoto vs Billy Harris Set 2 O/U 10.5 | 50% | -100 | ▲ 1 |
| Seoul: Rei Sakamoto vs Billy Harris Match O/U 21.5 | 50% | -100 | ▼ 3 |
| Seoul: Rei Sakamoto vs Billy Harris Match O/U 22.5 | 50% | -100 | ▼ 2 |
| Seoul: Rei Sakamoto vs Billy Harris Match O/U 23.5 | 50% | -100 | ▼ 0 |
| Seoul: Rei Sakamoto vs Billy Harris Set Handicap +/-1.5 | 50% | -100 | ▲ 4 |
| Seoul: Rei Sakamoto vs Billy Harris Set Handicap +/-1.5 | 50% | -100 | ▲ 39 |
| Seoul: Rei Sakamoto vs Billy Harris Game Spread +/-3.5 | 50% | -100 | ▲ 8 |
Price history
Resolution rules
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.
Source: Polymarket. The venue's rules are final.
FAQ
How are prediction market odds calculated?
Each contract pays $1 if the outcome happens and $0 if it doesn't, so its price is the market's implied probability: a 60¢ contract means roughly a 60% chance. We show the last trade, or the midpoint between the best bid and ask when the order book is tight.
When does this market close?
Polymarket lists Nov 6, 2026 as the end date; this market has closed.
Where can I trade on Seoul: Rei Sakamoto vs Billy Harris?
This market trades on Polymarket. Availability depends on where you live: Kalshi is a CFTC-regulated US exchange, while Polymarket's international site isn't available to US users (Polymarket US is a separate app). You must be 18 or older.