TOTAL VOLUME:

$134.2b

24H VOL:

$126,590,312

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,439,516,703

404,175

Markets across

30,277

events

MATCHED EVENTS:

2,685

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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M25 Urayasu: Naoya Honda vs Seiya Nakanishi
polymarket

Who will win Naoya Honda vs Seiya Nakanishi?

Volume:
$796

M25 Urayasu: Naoya Honda vs Seiya Nakanishi

 - Polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 2, 2026

Closed: Sep 1, 11:00 PM EST

polymarket

Polymarket

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

M25 Urayasu: Naoya Honda vs Seiya Nakanishi

View
100%
Yes 100¢No 0¢
44.6¢
N/A
$456
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

100%
Yes 100¢No 0¢
—
N/A
$340
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Match O/U 21.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set 1 O/U 8.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Total Sets: O/U 2.5

0%
Yes 0¢No 100¢
99¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set 1 Winner

100%
Yes 100¢No 0¢
99¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set Handicap +/-1.5

100%
Yes 100¢No 0¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set 2 O/U 8.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set 2 Winner

100%
Yes 100¢No 0¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set 2 O/U 9.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Match O/U 22.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set Handicap +/-1.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set 1 O/U 9.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Match O/U 23.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set 2 O/U 10.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

M25 Urayasu: Naoya Honda vs Seiya Nakanishi Set 1 O/U 10.5

0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 16

Description

This market refers to the tennis match between Naoya Honda and Seiya Nakanishi in the M25 Urayasu, Main Draw, originally scheduled for September 1, 2026 at 9:00PM ET. This market will resolve to 'Naoya Honda' if Naoya Honda advances against Seiya Nakanishi. This market will resolve to 'Seiya Nakanishi' if Seiya Nakanishi advances against Naoya Honda. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 15, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.

Polymarket

This market refers to the tennis match between Naoya Honda and Seiya Nakanishi in the M25 Urayasu, Main Draw, originally scheduled for September 1, 2026 at 9:00PM ET. This market will resolve to 'Naoya Honda' if Naoya Honda advances against Seiya Nakanishi. This market will resolve to 'Seiya Nakanishi' if Seiya Nakanishi advances against Naoya Honda. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 15, 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.

Frequently asked questions

On Polymarket, the M25 Urayasu match-up market dashboard tracks real-time odds, price history, and 24-hour volume for bets on who will win between Naoya Honda and Seiya Nakanishi. The interface shows how trader sentiment shifts as the match approaches, with updates reflecting new information or betting activity. You can monitor the top outcome’s implied chance and see how trading volume of $796 reflects interest in this market. It’s a single-venue view, focused solely on Polymarket’s liquidity and price discovery for this specific contest.

On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. On Polymarket, traders manually set prices through buying and selling shares, creating a dynamic market price that reflects their collective view of who will win. The top outcome’s current implied chance shows what most participants expect at that moment. Liquidity levels depend on trading volume of $796, and price swings can happen quickly when new information emerges — such as injuries or weather updates — because there’s no central bookmaker adjusting the odds.

This market resolves around Sep 9, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will be determined by the official match result — who is declared the winner after all regulation time and any applicable tie-breaking procedures. Once the match concludes and results are widely reported, Polymarket will finalize the market based on those authoritative sources, ensuring traders know exactly when their positions will be settled.

Injuries, weather delays, or changes to the players’ form can all shift this market as the match nears. Media interviews, practice performance leaks, and betting trends on Polymarket may cause price swings, especially if one competitor appears favored or hindered. Any last-minute news — such as a surprise lineup change or pitch conditions — could also move the implied odds dramatically, so traders watch official announcements and live updates closely in the days leading to Sep 9, 2026.