TOTAL VOLUME:

$134.2b

24H VOL:

$126,324,530

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,434,646,834

406,019

Markets across

30,401

events

MATCHED EVENTS:

2,689

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas

Volume:
$330

Completed Match

 - Polymarket

Completed Match - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 31, 2026

Closed: Aug 31, 11:33 AM EST

polymarket

Polymarket

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

Completed Match

View
100%
1%
Yes 100¢No 0¢
20¢
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set Handicap +/-1.5

100%
Yes 100¢No 0¢
20¢
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas

0%
75%
Yes 0¢No 100¢
—
N/A
$154
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set 2 Winner

0%
Yes 0¢No 100¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set 2 O/U 8.5

0%
Yes 0¢No 100¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Match O/U 21.5

0%
Yes 0¢No 100¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set 2 O/U 9.5

0%
Yes 0¢No 100¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Match O/U 22.5

0%
Yes 0¢No 100¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set 2 O/U 10.5

0%
Yes 0¢No 100¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Match O/U 23.5

0%
Yes 0¢No 100¢
—
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set 1 Winner

0%
Yes 0¢No 100¢
—
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Total Sets: O/U 2.5

0%
Yes 0¢No 100¢
—
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set Handicap +/-1.5

0%
Yes 0¢No 100¢
—
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set 1 O/U 8.5

100%
Yes 100¢No 0¢
20¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas Set 1 O/U 9.5

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

Porto (Doubles): Freitas/Valdoleiros vs Damas/Canas 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 doubles tennis match between Freitas/Valdoleiros and Damas/Canas in the Porto, originally scheduled for September 1, 2026 at 5:00AM ET. This market will resolve to 'Freitas/Valdoleiros' if the team of Freitas/Valdoleiros advances against Damas/Canas. This market will resolve to 'Damas/Canas' if the team of Damas/Canas advances against Freitas/Valdoleiros. 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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 doubles tennis match between Freitas/Valdoleiros and Damas/Canas in the Porto, originally scheduled for September 1, 2026 at 5:00AM ET. This market will resolve to 'Freitas/Valdoleiros' if the team of Freitas/Valdoleiros advances against Damas/Canas. This market will resolve to 'Damas/Canas' if the team of Damas/Canas advances against Freitas/Valdoleiros. 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 team advances due to the opponent's retirement, default, or disqualification, this market will resolve to the team who advances. If the match ends in a walkover (a team 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 Porto Doubles matchup market dashboard tracks real-time odds, price fluctuations, and 24-hour volume for this prediction market. It shows how traders on Polymarket are pricing the contest between the two doubles teams, reflecting overall sentiment and betting activity. The dashboard updates continuously, allowing users to monitor trends, view historical price movements, and assess liquidity through $284 in 24-hour volume. This focused view helps participants gauge market confidence as the event approaches its conclusion on Sep 8, 2026.

Prediction market odds on Polymarket for this market often differ from traditional sportsbook lines due to unique trader dynamics and market specifications. While sportsbooks may set their lines based on broader analytics and public betting patterns, Polymarket users directly price the outcome through their trades, which can lead to sharper or more volatile odds. Traders should compare these odds to sportsbook lines to spot potential value, keeping in mind that prediction market prices also incorporate aspects like event timing and real-time information flow.

This market resolves around Sep 8, 2026, with the outcome confirmed once the event is verifiable from credible public reporting. The result will be determined by the official match conclusion, and the platform will update the market accordingly. Timing is tied to the scheduled match end, with any necessary confirmation period allowing for the verification of final scores and eligible outcomes.

In the run-up to resolution, this market could shift based on player injuries, weather conditions, recent form, or changes to the match venue. Media coverage, expert analysis, and betting trends on Polymarket may also influence trader sentiment. Any last-minute updates to the participating pairs or tournament conditions can cause rapid price adjustments, especially as Sep 8, 2026 approaches and uncertainty diminishes.