TOTAL VOLUME:

$134.2b

24H VOL:

$126,324,530

24H TRANSACTIONS:

2,388,728,490

OPEN INTEREST:

$1,434,646,834

406,019

Markets across

30,401

events

MATCHED EVENTS:

2,689

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

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Libema Open: Caty McNally vs Solana Sierra
polymarket
kalshi

Libema Open: Caty McNally vs Solana Sierra

Volume:
$369,459

Libema Open: Caty McNally vs Solana Sierra

 - Polymarket

Libema Open: Caty McNally vs Solana Sierra - Polymarket

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 12, 2026

Closed: Jun 18, 4:00 AM EST

polymarket

Polymarket

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

Libema Open: Caty McNally vs Solana Sierra

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$348,208
N/A
N/A
N/A
Settled
Yes
kalshi

Catherine McNally

View
100%
Yes 100¢No 0¢
100¢
N/A
$10,164
N/A
N/A
$6,890
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Set 1 Winner

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$1,864
N/A
N/A
N/A
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Set Handicap +/-1.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$2,682
N/A
N/A
N/A
Settled
Yes
kalshi

Solana Sierra

View
0%
Yes 0¢No 100¢
100¢
N/A
$6,165
N/A
N/A
$4,008
Settled
No
polymarket

Libema Open: Caty McNally vs Solana Sierra Total Sets: O/U 2.5

View
0%
Yes 0¢No 100¢
—
N/A
$303
N/A
N/A
N/A
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Match O/U 21.5

View
0%
Yes 0¢No 100¢
—
N/A
$73
N/A
N/A
N/A
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Set 1 O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$1
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

View
100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Match O/U 22.5

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

Libema Open: Caty McNally vs Solana Sierra Match O/U 23.5

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

Libema Open: Caty McNally vs Solana Sierra Set 1 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Set 1 O/U 9.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Set 2 Winner

View
100%
Yes 100¢No 0¢
1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Set 2 O/U 8.5

View
100%
Yes 100¢No 0¢
0.9¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
polymarket

Libema Open: Caty McNally vs Solana Sierra Set 2 O/U 9.5

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

Libema Open: Caty McNally vs Solana Sierra Set 2 O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 17

Description

This event group covers a professional tennis match between Caty McNally and Solana Sierra at the 2026 Libema Open (WTA S-Hertogenbosch), scheduled for June 11, 2026. Markets span match completion, winner determination, set outcomes, game totals, and handicap betting across Kalshi and Polymarket platforms.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Kalshi's Set 1 Winner market (items 1-2) contains a logical contradiction: both possible outcomes (McNally wins OR Sierra wins) resolve to Yes, making it impossible to distinguish a winner. Polymarket's equivalent market correctly resolves to the actual set winner or 50-50 on incompletion.Hero tip: Disregard Kalshi's Set 1 market due to unresolvable logic. All other markets (match completion, match winner, game/set totals, handicap) are consistent across platforms: use official WTA statistics, apply 50-50 on incomplete/canceled matches, and enforce 7-day delay threshold. Polymarket's Set 1 Winner is the reliable alternative.

Critical divergence points:

  • Kalshi: Set 1 Winner market (items 1-2) states: 'If Solana Sierra wins set 1... resolves to Yes' AND 'If Catherine McNally wins set 1... resolves to Yes.' This creates a tautology with no logical No outcome, making the market unresolvable.
  • Polymarket: Set 1 Winner market (item 12) correctly resolves to McNally or Sierra based on actual set outcome; incomplete set 1 resolves 50-50. This is logically sound and standard for binary tennis markets.
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

This market refers to the tennis match between Caty McNally and Solana Sierra in the Libema Open, originally scheduled for June 11, 2026 at 4:00AM ET. This market will resolve to 'Caty McNally' if Caty McNally advances against Solana Sierra. This market will resolve to 'Solana Sierra' if Solana Sierra advances against Caty McNally. 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.

Kalshi

The market resolves based on the outcome of set 1 in the professional tennis match between Catherine McNally and Solana Sierra at the 2026 WTA S-Hertogenbosch Round of 16. If the match does not occur before play begins due to injury, walkover, forfeiture, or cancellation, the market resolves to fair price. If postponed or delayed, the market remains open until the rescheduled match concludes within two weeks. If a player retires, markets that can be unconditionally settled based on completed play resolve accordingly; those that cannot are settled at fair market price as determined by the Exchange.

Frequently asked questions

Prediction markets like those tracked here operate on crowd-sourced pricing rather than traditional sportsbook models. Instead of fixed odds set by oddsmakers, traders continuously buy and sell shares, allowing prices to reflect real-time belief about the outcome. This often produces sharper, more responsive lines than static sportsbook odds, especially as new information emerges. However, prediction markets typically carry wider spreads and lower liquidity than major sportsbooks, so direct comparison requires checking both simultaneously during active trading windows.

Player injury reports, recent form and head-to-head records, court surface conditions, and weather forecasts are key catalysts for price movement. Betting action from sharp money and major sportsbook line shifts often precede prediction market moves. Tournament seeding changes, opponent withdrawals, or unexpected upsets in earlier rounds can also shift expectations. Social media sentiment and expert commentary may influence retail traders, while any official statements from the players or tournament organizers could trigger rapid repricing across both platforms.