TOTAL VOLUME:

$134.1b

24H VOL:

$133,388,117

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,436,095,462

405,232

Markets across

30,526

events

MATCHED EVENTS:

2,693

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Joao Fonseca vs Christopher O'Connell: Set 1 Winner
kalshi

Joao Fonseca vs Christopher O'Connell: Set 1 Winner

Volume:
$937

Joao Fonseca

 - Kalshi

Joao Fonseca - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Aug 18, 2026

Closed: Aug 17, 11:50 PM 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

Joao Fonseca

View
73%
Yes 73¢No 27¢
100¢
N/A
$932
N/A
N/A
$913
Settled
No
kalshi

Christopher O'Connell

27%
Yes 27¢No 73¢
100¢
N/A
$5
N/A
N/A
$5
Settled
No
Total markets: 2

Description

The opening set of this tennis encounter will feature intense rallies and tactical play. Securing the first set could provide a significant momentum boost for either contestant.

Kalshi

If Joao Fonseca wins set 1 in the Joao Fonseca vs Christopher O'Connell professional tennis match in the 2026 ATP Cincinnati Round Of 32, then the market resolves to Yes. If Christopher O'Connell wins set 1 in the Joao Fonseca vs Christopher O'Connell professional tennis match in the 2026 ATP Cincinnati Round Of 32, then the market resolves to Yes.