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
US Open, Qualification WTA: Yue Yuan vs Mary Stoiana
polymarket
kalshi

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana

Volume:
$611,325

Yibing Wu

 - Kalshi

Yibing Wu - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 28, 2026

Closed: Aug 30, 1:41 PM EST

kalshi

Kalshi

View
Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Yibing Wu

View
100%
Yes 100¢No 0¢
1¢
N/A
$129,976
N/A
N/A
$95,093
Settled
Yes
polymarket

Completed Match

100%
Yes 100¢No 0¢
0.1¢
N/A
$4,494
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Set 2 Winner

100%
42%
Yes 100¢No 0¢
0.1¢
N/A
$958
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Match O/U 21.5

100%
48%
Yes 100¢No 0¢
0.1¢
N/A
$143
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Match O/U 22.5

100%
53%
Yes 100¢No 0¢
1¢
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana

0%
46%
Yes 0¢No 100¢
—
N/A
$349,251
N/A
N/A
N/A
Settled
Yes
kalshi

Adam Walton

0%
Yes 0¢No 100¢
1¢
N/A
$125,250
N/A
N/A
$62,029
Settled
No
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Set 1 Winner

0%
47%
Yes 0¢No 100¢
—
N/A
$884
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Set Handicap +/-1.5

0%
32%
Yes 0¢No 100¢
—
N/A
$358
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Set 1 O/U 8.5

100%
25%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana 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

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Total Sets: O/U 2.5

100%
59%
Yes 100¢No 0¢
1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Game Spread +/-2.5

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

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Set 1 O/U 9.5

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

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana 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

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Set 2 O/U 10.5

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

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Set 1 O/U 10.5

0%
51%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

US Open, Qualification WTA: Yue Yuan vs Mary Stoiana Match O/U 23.5

100%
Yes 100¢No 0¢
1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 18

Intro

This market tracks who will win the third set in the Yibing Wu versus Adam Walton tennis match. The aggregated consensus probability shows Yibing Wu winning set 3 at 59.0%, with Adam Walton at 45.0%, drawing data from Polymarket and Kalshi, and resolving based on official WTA Tour and Grand Slam statistics. The outcome will be confirmed by the match's conclusion on August 30, 2026.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

All markets across Polymarket and Kalshi share consistent resolution logic based on official WTA/Grand Slam results with clear definitions for abandonment, postponements, and partial completions.Primary resolution logic: Official WTA Tour and Grand Slam statistics

Core resolution logic:

  • Match winner markets resolve to the player who advances, with 50-50 for walkovers, cancellations, or unresolved matches
  • Game/set total markets resolve based on completed games unless play stops with guaranteed outcome or is abandoned
  • Set-specific markets resolve based on completed sets or 50-50 if unresolved
  • Handicap/spread markets resolve based on final game differential unless abandoned or unresolved

Edge cases & clarifications:

  • Abandoned Match: All markets resolve 50-50 unless outcome was already unconditionally determined by completed play
  • Postponement: Markets remain open until completion; postponement alone does not trigger 50-50 resolution
  • Walkover: Match winner market resolves 50-50; game/set total markets resolve based on completed play or 50-50 if none
Timing: Resolution occurs when official results are published by WTA/Grand Slam authorities, with final deadline of September 10, 2026 for unresolved matchesOur 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 Yue Yuan and Mary Stoiana in the US Open, Qualification WTA, originally scheduled for August 27, 2026 at 12:30PM ET. This market will resolve to 'Yue Yuan' if Yue Yuan advances against Mary Stoiana. This market will resolve to 'Mary Stoiana' if Mary Stoiana advances against Yue Yuan. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by September 10, 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 WTA Tour. A consensus of credible reporting may also be used.

Kalshi

If Yibing Wu wins set 3 in the Yibing Wu vs Adam Walton professional tennis match in the 2026 US Open Men Singles Round Of 128, then the market resolves to Yes. If Adam Walton wins set 3 in the Yibing Wu vs Adam Walton professional tennis match in the 2026 US Open Men Singles Round Of 128, then the market resolves to Yes.