TOTAL VOLUME:

$154.4b

24H VOL:

$290,393,159

24H TRANSACTIONS:

2,984,640,614

OPEN INTEREST:

$1,944,100,805

420,493

Markets across

40,511

events

MATCHED EVENTS:

4,612

PLATFORM COVERAGE:

5

Polymarket:

37%

VS.

Kalshi:

63%

BETA
Dashboards
Tour
All
Sports
Seoul: Rei Sakamoto vs Billy Harris
polymarket

Who will win Rei Sakamoto vs Billy Harris?

Volume:
$93,493

Seoul: Rei Sakamoto vs Billy Harris Set Handicap +/-1.5

 - Polymarket

Seoul: Rei Sakamoto vs Billy Harris Set Handicap +/-1.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Oct 30, 2026

Closed: Oct 30, 12:19 AM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set Handicap +/-1.5

View
50%
4%
Yes 50¢No 50¢
—
N/A
$15
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Match O/U 22.5

50%
43%
Yes 50¢No 50¢
—
N/A
$10
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Match O/U 21.5

50%
2%
Yes 50¢No 50¢
—
N/A
$4
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris

0%
76%
Yes 0¢No 100¢
—
N/A
$93,064
N/A
N/A
N/A
2d 22h 45m
No
polymarket

Completed Match

0%
Yes 0¢No 100¢
—
N/A
$400
N/A
N/A
N/A
2d 22h 45m
No
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set 1 Winner

50%
20%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set 2 Winner

50%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Total Sets: O/U 2.5

50%
14%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set 1 O/U 8.5

50%
26%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set 1 O/U 9.5

50%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set 1 O/U 10.5

50%
20%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set 2 O/U 8.5

50%
1%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set 2 O/U 9.5

50%
1%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set 2 O/U 10.5

50%
1%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Match O/U 23.5

50%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Set Handicap +/-1.5

50%
39%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
polymarket

Seoul: Rei Sakamoto vs Billy Harris Game Spread +/-3.5

50%
7%
Yes 50¢No 50¢
—
N/A
N/A
N/A
N/A
N/A
2d 22h 45m
ResolvedResult not available
Total markets: 17

Description

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.

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.

Frequently asked questions

On Polymarket, the dashboard for the Sakamoto vs Harris match tracks the current odds, price history, and 24-hour trading volume. Currently, the total volume for this market is $93,493, with $93,132 traded in the last 24 hours. You can see how the implied probability of each outcome has changed over time through the price chart. This provides a visual representation of how traders are assessing the potential results of this exciting matchup. The dashboard is updated in real-time, reflecting the latest activity on Polymarket.

Prediction market odds often offer a different perspective than traditional sportsbooks. While sportsbooks set lines based on their own models and risk assessment, this market reflects the collective wisdom of traders who are incentivized to accurately predict the outcome. Discrepancies can arise due to differing information, biases, or simply varying interpretations of the event. It’s common to see prediction markets move independently of sportsbook lines, especially as new information becomes available or as the event draws closer. Analyzing these differences can be a valuable exercise for informed decision-making.

On Polymarket, this market is priced through a continuous auction mechanism where traders buy and sell shares representing their belief in the likelihood of each outcome. The price of a share directly corresponds to the implied probability of that outcome occurring. As more traders buy shares in a particular outcome, its price increases, and vice versa. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The market's price reflects the aggregate sentiment of all participants, creating a dynamic and real-time assessment of the potential results of the Sakamoto vs Harris match. The current trading volume influences price discovery.

This market resolves around Nov 6, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official result of the Sakamoto vs Harris match as reported by the governing body or official tournament organizers. The platform will verify the result against these sources to determine the winning outcome. Traders who held shares in the correct outcome will be entitled to a payout based on the final market price at the time of resolution. This ensures a transparent and objective settlement process.

Several factors could influence the price of this market before Nov 6, 2026. Any news regarding player injuries, changes in playing conditions, or significant performance updates could shift trader sentiment. Unexpected announcements about team strategies or coaching decisions could also play a role. Public opinion, as reflected in polls or expert analysis, might also exert some influence, although the market is ultimately driven by trading activity on Polymarket. Major upsets in related matches or tournaments could indirectly affect perceptions of player form and impact trading behavior.