TOTAL VOLUME:

$134.1b

24H VOL:

$141,541,542

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,440,096,988

406,065

Markets across

30,522

events

MATCHED EVENTS:

2,692

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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National Bank Open: Joao Fonseca vs Ben Shelton
polymarket
limitless

Who will win Joao Fonseca vs Ben Shelton?

Volume:
$1,332,442

National Bank Open: Joao Fonseca vs Ben Shelton Match O/U 21.5

 - Polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Match O/U 21.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 10, 2026

Closed: Aug 9, 8:32 PM EST

polymarket

Polymarket

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

National Bank Open: Joao Fonseca vs Ben Shelton Match O/U 21.5

View
100%
31%
Yes 100¢No 0¢
0.1¢
N/A
$2,439
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

View
100%
2%
Yes 100¢No 0¢
0.1¢
N/A
$1,177
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set Handicap +/-1.5

View
100%
67%
Yes 100¢No 0¢
0.1¢
N/A
$901
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set 2 O/U 10.5

View
100%
3%
Yes 100¢No 0¢
0.1¢
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set 2 O/U 8.5

View
100%
3%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set 2 O/U 9.5

View
100%
3%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton

View
0%
46%
Yes 0¢No 100¢
—
N/A
$1,300,989
N/A
N/A
N/A
Settled
Yes
limitless

Joao Fonseca vs Ben Shelton

View
0%
Yes 0¢No 100¢
99.8¢
N/A
$122
N/A
N/A
N/A
Settled
No
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set 1 Winner

View
0%
48%
Yes 0¢No 100¢
—
N/A
$11,910
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set 2 Winner

View
0%
53%
Yes 0¢No 100¢
—
N/A
$8,371
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Match O/U 22.5

View
0%
56%
Yes 0¢No 100¢
—
N/A
$3,042
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Total Sets: O/U 2.5

View
0%
42%
Yes 0¢No 100¢
—
N/A
$1,816
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Match O/U 23.5

View
0%
49%
Yes 0¢No 100¢
—
N/A
$1,099
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set 1 O/U 10.5

View
0%
50%
Yes 0¢No 100¢
—
N/A
$554
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set 1 O/U 8.5

View
100%
9%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

National Bank Open: Joao Fonseca vs Ben Shelton Set 1 O/U 9.5

View
0%
91%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 16

Intro

This market tracks whether the combined games in the Joao Fonseca versus Ben Shelton match at the National Bank Open will exceed 21.5 games, with the aggregated consensus probability currently at 100.0% drawn from Polymarket and Limitless, resolving against official ATP Tour statistics. The decisive catalyst to monitor will be the match conclusion on August 10, 2026, which will determine the final game count and settle this market.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

Both platforms use identical logic for match outcome and game/set thresholds, with 50-50 resolution for cancellations, incomplete matches, walkovers, and retirements. All markets rely on ATP Tour official statistics.Primary resolution logic: Official ATP Tour statistics

Core resolution logic:

  • Match winner resolves to the player who advances; 50-50 for cancellations, ties, walkovers, or retirements
  • Set and game over/under markets resolve based on completed games/sets from ATP statistics; 50-50 if incomplete or canceled
  • All markets resolve using ATP Tour as the primary source, with credible reporting as a backup if ATP data is delayed

Edge cases & clarifications:

  • Walkover: If a player withdraws before the match starts, the match winner market resolves 50-50, and all over/under markets resolve 50-50
  • Retirement: If a player retires during the match, the match winner market resolves to the advancing player, and all over/under markets resolve based on completed games/sets
  • Cancellation: If the match is canceled before play begins or delayed beyond 7 days, all markets resolve 50-50
Timing: Resolution occurs immediately after official ATP results are published, with credible reporting used if ATP data is delayed beyond 2 hours post-matchOur PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

This market refers to the tennis match between Joao Fonseca and Ben Shelton in the National Bank Open, originally scheduled for August 10, 2026 at 10:00AM ET. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Ben Shelton. This market will resolve to 'Ben Shelton' if Ben Shelton advances against Joao Fonseca. 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.

Limitless

This market refers to the tennis match between Joao Fonseca and Ben Shelton in the ATP Canadian Open, originally scheduled for August 10, 2026 at 14:00 UTC. This market will resolve to 'Joao Fonseca' if Joao Fonseca advances against Ben Shelton. This market will resolve to 'Ben Shelton' if Ben Shelton advances against Joao Fonseca. 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.

Frequently asked questions

The dashboard for the Fonseca vs Shelton match market aggregates real-time data from multiple prediction platforms, showing how traders price the chances of each outcome. It tracks volume of $1,332,442 and 24-hour volume of $1,330,874, letting you see where the consensus stands. Because this market is followed across venues, the dashboard offers a single view of shifting probabilities and liquidity, so users can compare sentiment without jumping between sites.