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%

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Tatiana Prozorova vs Sofia Costoulas: Set 1 Winner
kalshi

Tatiana Prozorova vs Sofia Costoulas: Set 1 Winner

Volume:
$61,996

Sofia Costoulas

 - Kalshi

Sofia Costoulas - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Sep 22, 2026

Closed: Sep 22, 3:16 AM 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

Sofia Costoulas

View
100%
55%
Yes 100¢No 0¢
100¢
N/A
$21,647
N/A
N/A
$15,064
Settled
Yes
kalshi

Tatiana Prozorova

0%
58%
Yes 0¢No 100¢
100¢
N/A
$40,349
N/A
N/A
$29,025
Settled
No
Total markets: 2

Description

This market tracks the outcome of the first set in a professional tennis match between Tatiana Prozorova and Sofia Costoulas. The winner of the set determines the result, reflecting the competitive performance of each player in the early stages of their match.

Kalshi

If Tatiana Prozorova wins set 1 in the Tatiana Prozorova vs Sofia Costoulas professional tennis match in the 2026 WTA Singapore Round Of 32, then the market resolves to Yes. If Sofia Costoulas wins set 1 in the Tatiana Prozorova vs Sofia Costoulas professional tennis match in the 2026 WTA Singapore Round Of 32, then the market resolves to Yes.