No previous meetings between these players on record.
Price History
How the market priced this match, up to settlement.
Total Volume
$192.3K
7D
Marta Kostyuk100%Sloane Stephens0%
source: Polymarket
Match Date
When the match was played and when the market settled.
AugustTUE 18
Match played
AugustTUE 18
Market settled
Match Recap
How the match ended and how the market closed.
Cincinnati Open: Marta Kostyuk vs Sloane Stephens winner?AUG 18, 2026
Marta Kostyuk beat Sloane Stephens 7-5 7-5 at Cincinnati Open. Before the match the market priced Marta Kostyuk at 86% – the market had it right. $192.3K was traded across 15 markets on this match before it settled. This page is an archive: the market is closed and the prices shown are closing prices.
100%
closing
All Markets on This Match
Set winners, totals and props on the same event, ranked by traded volume, most active first.
Market
Leading outcome
Set 1 Winner: Kostyuk vs Stephens
Kostyuk 100%
Set Handicap: Kostyuk (-1.5) vs Stephens (+1.5)
Kostyuk 100%
Set 2 Winner: Kostyuk vs Stephens
Kostyuk 100%
Marta Kostyuk vs. Sloane Stephens: Total Sets O/U 2.5
