TOTAL VOLUME:

$134.2b

24H VOL:

$134,145,987

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,441,166,947

406,422

Markets across

30,383

events

MATCHED EVENTS:

2,688

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Tour
All
Sports
Granby: Guillaume Dalmasso vs Aidan Mayo
polymarket

Who will win Dalmasso vs Mayo?

Volume:
$25,544

Granby: Guillaume Dalmasso vs Aidan Mayo Set Handicap +/-1.5

 - Polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Set Handicap +/-1.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jul 14, 2026

Closed: Jul 21, 11:30 AM EST

polymarket

Polymarket

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

Granby: Guillaume Dalmasso vs Aidan Mayo Set Handicap +/-1.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$7
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo

0%
Yes 0¢No 100¢
—
N/A
$25,023
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Match O/U 21.5

0%
Yes 0¢No 100¢
—
N/A
$286
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Set 1 Winner

0%
Yes 0¢No 100¢
—
N/A
$198
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Match O/U 22.5

0%
Yes 0¢No 100¢
—
N/A
$31
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Set 1 O/U 8.5

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Total Sets: O/U 2.5

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

Granby: Guillaume Dalmasso vs Aidan Mayo Set 2 Winner

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

Granby: Guillaume Dalmasso vs Aidan Mayo Set Handicap +/-1.5

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

Granby: Guillaume Dalmasso vs Aidan Mayo Set 2 O/U 8.5

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Set 1 O/U 9.5

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Set 2 O/U 9.5

100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Granby: Guillaume Dalmasso vs Aidan Mayo Set 1 O/U 10.5

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

Granby: Guillaume Dalmasso vs Aidan Mayo Set 2 O/U 10.5

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

Granby: Guillaume Dalmasso vs Aidan Mayo Match O/U 23.5

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 Guillaume Dalmasso and Aidan Mayo in the Granby, originally scheduled for July 14, 2026 at 11:30AM ET. This market will resolve to 'Guillaume Dalmasso' if Guillaume Dalmasso advances against Aidan Mayo. This market will resolve to 'Aidan Mayo' if Aidan Mayo advances against Guillaume Dalmasso. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 Guillaume Dalmasso and Aidan Mayo in the Granby, originally scheduled for July 14, 2026 at 11:30AM ET. This market will resolve to 'Guillaume Dalmasso' if Guillaume Dalmasso advances against Aidan Mayo. This market will resolve to 'Aidan Mayo' if Aidan Mayo advances against Guillaume Dalmasso. If the match is canceled (not played at all), ends in a tie, or is delayed beyond 7 days from the scheduled date without a winner determined, 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 Dalmasso vs Mayo fight displays real-time odds and price history as traders buy and sell shares tied to the bout's outcome. You can monitor current market probability, historical price movements, and trading volume to understand how prediction market participants are positioning ahead of the event. The interface lets you track shifts in sentiment and liquidity as new information emerges, giving you a live window into collective expectations for this matchup.

Prediction market odds and sportsbook odds often diverge because they reflect different participant bases and incentive structures. Sportsbooks set lines to balance action and manage risk, while prediction markets aggregate the beliefs of traders risking real capital on outcomes. This market's odds may lead or lag traditional sportsbook pricing depending on which venue attracts sharper action first. Comparing the two can reveal where informed traders see value relative to conventional betting markets.

On Polymarket, this market is priced through an automated market maker that converts trader activity into real-time probabilities. On Polymarket, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. Buying shares for a given outcome raises its price; selling lowers it. The mechanism ensures continuous liquidity and transparent pricing, so you can enter or exit positions without waiting for a counterparty. Prices reflect the collective confidence of all active traders on the platform at any moment.

This market resolves around Jul 21, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will be determined by the official fight result as documented by recognized sports authorities and media coverage. Until that time, traders can continue to buy and sell shares as new information and analysis emerge.

Key catalysts include fighter training updates, injury reports, weigh-in results, and analyst commentary on technique or conditioning. Media coverage and social sentiment can shift trader positioning as fight day approaches. Odds from traditional sportsbooks and changes in betting patterns at other venues may also influence market participants. Close to the event, any last-minute news—from fighter statements to venue or rule changes—could trigger sharp repricing as traders reassess probabilities.