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%

BETA
Dashboards
Insights
Indices
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
Singapore Open: Tatiana Prozorova vs Sofia Costoulas
limitless
polymarket

What is the result of Tatiana Prozorova vs Sofia Costoulas?

Volume:
$299,055

Tatiana Prozorova vs Sofia Costoulas

all

2 markets

Limitless

Polymarket

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 22, 2026

Closed: Sep 22, 5:13 AM EST

limitless

Limitless

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

Tatiana Prozorova vs Sofia Costoulas

View
100%
Yes 100¢No 0¢
-99¢
N/A
$1,038
N/A
N/A
N/A
Settled
No
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas

View
100%
41%
Yes 100¢No 0.1¢
0.1¢
N/A
$295,425
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

View
100%
Yes 100¢No 0.1¢
0.1¢
N/A
$400
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set 2 Winner

View
100%
44%
Yes 100¢No 0.1¢
0.1¢
N/A
$263
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Match O/U 21.5

View
100%
50%
Yes 100¢No 0.1¢
0.1¢
N/A
$146
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Match O/U 22.5

View
100%
55%
Yes 100¢No 0.1¢
0.1¢
N/A
$68
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Total Sets: O/U 2.5

View
100%
62%
Yes 100¢No 0.4¢
0.4¢
N/A
$611
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set 1 Winner

View
0%
58%
Yes 0.9¢No 100¢
—
N/A
$995
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set Handicap +/-1.5

View
0%
39%
Yes 0.4¢No 100¢
—
N/A
$107
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set 1 O/U 8.5

View
99%
28%
Yes 100¢No 3¢
3¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set 1 O/U 9.5

View
100%
48%
Yes 100¢No 0.1¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set 1 O/U 10.5

View
100%
76%
Yes 100¢No 0.1¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set 2 O/U 8.5

View
99%
Yes 100¢No 2.9¢
2.9¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set 2 O/U 9.5

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

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Set 2 O/U 10.5

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

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Match O/U 23.5

View
99%
51%
Yes 100¢No 3¢
3¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Singapore Open: Tatiana Prozorova vs Sofia Costoulas Game Spread +/-1.5

View
100%
45%
Yes 100¢No 0.1¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 17

Description

This group covers various markets related to a tennis match between Tatiana Prozorova and Sofia Costoulas in the Singapore Open. Markets include predicting the match winner, set winners, total games played, and set/game over/under lines. The markets are designed to resolve based on official WTA tour statistics.

PredictionHero - Resolution Divergence Alerts (RDA)

Unified Resolution Criteria (Consistent across platforms)

The resolution criteria across both Polymarket and Limitless are highly consistent regarding match completion, cancellation, retirement, and the primary resolution source (WTA).Primary resolution logic: Official WTA Tour statistics

Core resolution logic:

  • Markets resolve based on the official result as reported by the WTA Tour.
  • If the match is not completed, resolution depends on the specific market, potentially resolving to 50-50 or to the player who advanced due to opponent default/retirement.
  • A cancellation or failure to start within a specified timeframe (7-14 days) typically results in a 50-50 resolution.
  • Tiebreaks count as a single game in over/under markets.

Edge cases & clarifications:

  • Match Abandonment: If a match is abandoned before completion, markets will resolve based on the completed portion of play where possible, or 50-50 if no definitive outcome can be determined.
  • Resolution Delay: Both platforms specify a timeframe (7-14 days) after the scheduled match date for resolution. If a winner is not determined within this timeframe, the market resolves to 50-50.
  • Tiebreaks: Tiebreaks are consistently treated as a single game in over/under game markets.
Timing: Resolution will occur once official WTA statistics are available, or within 14 days of the scheduled match date if no result is available, whichever comes first.Our 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 Tatiana Prozorova and Sofia Costoulas in the Singapore Open, originally scheduled for September 20, 2026 at 10:00PM ET. This market will resolve to 'Tatiana Prozorova' if Tatiana Prozorova advances against Sofia Costoulas. This market will resolve to 'Sofia Costoulas' if Sofia Costoulas advances against Tatiana Prozorova. If the match is canceled (not played at all), ends in a tie, or a winner has not been determined by October 4, 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.

Limitless

This market refers to the tennis match between Tatiana Prozorova and Sofia Costoulas in the WTA Singapore Open, originally scheduled for September 21, 2026 at 03:10 UTC. This market will resolve to 'Tatiana Prozorova' if Tatiana Prozorova advances against Sofia Costoulas. This market will resolve to 'Sofia Costoulas' if Sofia Costoulas advances against Tatiana Prozorova. 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

On Polymarket and Limitless, this dashboard tracks the probability of different outcomes in the Singapore Open women's singles match between Tatiana Prozorova and Sofia Costoulas. Currently, the aggregated volume across both platforms is $299,055, with $297,859 traded in the last 24 hours. This allows traders to express their views on who will win this match. The dashboard provides a consensus view, reflecting the combined predictions from these two venues, and displays the current implied probabilities for each possible result. This is a great way to gauge overall market sentiment regarding the Singapore Open women's singles market.

Prediction market odds, like those found on Polymarket and Limitless, often reflect the wisdom of the crowd, potentially offering a different perspective than traditional sportsbooks. Sportsbooks set odds based on their own models and aim to profit by balancing risk. This market, however, allows anyone to trade, and prices adjust based on collective belief. While sportsbooks may initially have an edge due to specialized information, prediction markets can become highly accurate as more information becomes available and more traders participate. Differences can arise from varying levels of information aggregation and the incentives of each type of platform.

Polymarket and Limitless can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Prices on Polymarket and Limitless may differ due to several factors. Each platform has its own user base, trading rules, and fee structure, all of which can influence price discovery. Furthermore, the volume traded on each platform can vary, leading to discrepancies. Polymarket currently favors a particular outcome, while Limitless leans toward another. These differences in sentiment and trading activity contribute to the observed price divergence. It’s also possible that information is incorporated at different rates across the two platforms.