TOTAL VOLUME:

$134b

24H VOL:

$107,351,958

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,416,970,024

400,720

Markets across

30,097

events

MATCHED EVENTS:

2,633

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Tatiana Prozorova vs Sofia Costoulas: Total Games
kalshi

Tatiana Prozorova vs Sofia Costoulas: Total Games

Volume:
$5,010

Over 26.5 games

 - Kalshi

Over 26.5 games - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 22, 2026

Closed: Sep 22, 4:56 AM EST

kalshi

Kalshi

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

Over 26.5 games

View
100%
Yes 100¢No 0¢
100¢
N/A
$1,901
N/A
N/A
$1,480
Settled
Yes
kalshi

Over 21.5 games

100%
Yes 100¢No 0¢
100¢
N/A
$1,756
N/A
N/A
$1,268
Settled
Yes
kalshi

Over 16.5 games

100%
18%
Yes 100¢No 0¢
100¢
N/A
$1,353
N/A
N/A
$1,353
Settled
Yes
Total markets: 3

Description

These markets evaluate how long a tennis match between Tatiana Prozorova and Sofia Costoulas will last, measured by the total number of games played. Each market corresponds to a different threshold of game counts, allowing participants to speculate on whether the match will extend beyond specific lengths. Outcomes are determined solely by the final game count from the completed match.

Kalshi

The markets resolve based on whether the total number of completed games in the Tatiana Prozorova vs Sofia Costoulas professional tennis match exceeds specified thresholds (16.5, 21.5, or 26.5 games). If the match does not occur due to cancellation, injury, walkover, or forfeiture before play begins, all markets resolve to a fair price. Postponements or delays keep markets open until the rescheduled match concludes, with resolution within two weeks after completion. If a player retires during the match, markets that can be settled based on completed play resolve accordingly, while unresolved markets are settled at Fair Market Price determined by the Exchange. Kalshi disclaims any official affiliation with the governing league, and all trademarks remain the property of their respective owners.