TOTAL VOLUME:
$134.2b
24H VOL:
$130,522,377
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,438,389,636
404,028
Markets across
30,214
events
MATCHED EVENTS:
2,681
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Aug 18, 12:36 PM EST
Kalshi
Katerina Siniakova and Madison Keys will face off in a professional tennis match at the 2026 WTA Cincinnati Round Of 32. The market resolves based on which player claims victory after the match starts.
If Katerina Siniakova wins the Siniakova vs Keys professional tennis match in the 2026 WTA Cincinnati Round Of 32 after a ball has been played, then the market resolves to Yes. If Madison Keys wins the Siniakova vs Keys professional tennis match in the 2026 WTA Cincinnati Round Of 32 after a ball has been played, then the market resolves to Yes.