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%

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Madrid Open: Katerina Siniakova vs Caty McNally
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally

Volume:
$600,390

Madrid Open: Katerina Siniakova vs Caty McNally Match O/U 21.5

 - Polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Match O/U 21.5 - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Apr 26, 2026

Closed: May 3, 5:00 AM EST

polymarket

Polymarket

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

Madrid Open: Katerina Siniakova vs Caty McNally Match O/U 21.5

View
100%
Yes 100¢No 0¢
—
N/A
$545
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Total Sets: O/U 2.5

100%
Yes 100¢No 0¢
—
N/A
$261
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Match O/U 22.5

100%
Yes 100¢No 0¢
—
N/A
$123
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Match O/U 23.5

100%
Yes 100¢No 0¢
—
N/A
$105
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Set 1 O/U 8.5

100%
Yes 100¢No 0¢
—
N/A
$41
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally

0%
Yes 0¢No 100¢
—
N/A
$588,806
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Set 1 Winner

0%
Yes 0¢No 100¢
—
N/A
$9,496
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Set 1 O/U 9.5

0%
Yes 0¢No 100¢
—
N/A
$471
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Set Handicap +/-1.5

0%
Yes 0¢No 100¢
—
N/A
$397
N/A
N/A
N/A
Settled
Yes
polymarket

Madrid Open: Katerina Siniakova vs Caty McNally Set 1 O/U 10.5

0%
Yes 0¢No 100¢
—
N/A
$146
N/A
N/A
N/A
Settled
Yes
Total markets: 10

Description

This market refers to the tennis match between Katerina Siniakova and Caty McNally in the Madrid Open, originally scheduled for April 26, 2026 at 5:00AM ET. This market will resolve to 'Katerina Siniakova' if Katerina Siniakova advances against Caty McNally. This market will resolve to 'Caty McNally' if Caty McNally advances against Katerina Siniakova. 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. The primary resolution source will be official information from the WTA Tour. A consensus of credible reporting may also be used.