TOTAL VOLUME:

$134.1b

24H VOL:

$133,388,117

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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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Grass Court Championships: Donna Vekic vs Alexandra Eala
kalshi
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala

Volume:
$2,204,256

Alexandra Eala

 - Kalshi

Alexandra Eala - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 17, 2026

Closed: Jun 17, 7:15 AM 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

Alexandra Eala

View
100%
Yes 100¢No 0¢
100¢
N/A
$574,374
N/A
N/A
$301,669
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Set 2 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$400
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

View
100%
Yes 100¢No 0¢
1¢
N/A
$331
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Set 1 O/U 10.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$328
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Set 1 O/U 9.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$305
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Match O/U 21.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$255
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Set 2 O/U 9.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$64
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Set 1 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$33
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala

View
0%
Yes 0¢No 100¢
—
N/A
$1,110,719
N/A
N/A
N/A
Settled
Yes
kalshi

Donna Vekic

View
0%
Yes 0¢No 100¢
100¢
N/A
$506,723
N/A
N/A
$302,421
Settled
No
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Set Handicap +/-1.5

View
0%
Yes 0¢No 100¢
—
N/A
$6,724
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Total Sets: O/U 2.5

View
0%
Yes 0¢No 100¢
—
N/A
$2,783
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Set 1 Winner

View
0%
Yes 0¢No 100¢
—
N/A
$999
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Set 2 Winner

View
0%
Yes 0¢No 100¢
—
N/A
$156
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Match O/U 23.5

View
0%
Yes 0¢No 100¢
—
N/A
$61
N/A
N/A
N/A
Settled
Yes
polymarket

Grass Court Championships: Donna Vekic vs Alexandra Eala Match O/U 22.5

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

Grass Court Championships: Donna Vekic vs Alexandra Eala 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

Intro

This market tracks the total number of games played in the second set of the professional tennis match between Donna Vekic and Alexandra Eala at the Grass Court Championships in Berlin on June 15, 2026. The aggregated consensus across Kalshi and Polymarket shows 100.0% probability for the over/under 8.5 games threshold. Resolution will be determined by official WTA Tennis scores. Watch for the match completion on June 15, 2026, as resolution depends on the final game count in set two being officially recorded.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Kalshi uses a minimal 'ball played' trigger with no explicit edge-case handling, while Polymarket provides comprehensive 7-day delay, walkover, and retirement rules. This creates different outcomes for incomplete matches and walkovers.Hero tip: Monitor WTA official statistics closely. If the match is incomplete, ends in a walkover, or is delayed beyond 7 days, Polymarket will resolve 50-50 on most markets while Kalshi's binary framework may resolve Yes to the advancing player. Cross-platform arbitrage risk exists if either platform settles prematurely.

Critical divergence points:

  • Polymarket: Comprehensive edge-case framework. Match winner resolves to advancing player if opponent retires/defaults mid-match; resolves 50-50 for walkovers, cancellations, or delays beyond 7 days. All game/set markets also resolve 50-50 if match is incomplete or delayed beyond 7 days. Quote: 'If the match ends in a walkover (player withdraws before the start and the other advances automatically), this market will resolve to 50-50.'
  • Kalshi: Minimal binary framework. Market resolves Yes if either player wins 'after a ball has been played.' No explicit handling of walkovers, retirements, cancellations, or delays. Quote: 'If Alexandra Eala wins the Vekic vs Eala professional tennis match in the 2026 Berlin Round Of 32 after a ball has been played, then the market resolves to Yes.'
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 Donna Vekic and Alexandra Eala in the Grass Court Championships, originally scheduled for June 15, 2026 at 4:00AM ET. This market will resolve to 'Donna Vekic' if Donna Vekic advances against Alexandra Eala. This market will resolve to 'Alexandra Eala' if Alexandra Eala advances against Donna Vekic. 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

Resolution requires that a ball has been played in the match, confirming the match has officially started. If the match does not occur before play begins due to injury, walkover, forfeiture, or other cancellation, the market resolves to a fair price. If the match is postponed or delayed, the market remains open and closes after the rescheduled match concludes, provided this occurs within two weeks.

Frequently asked questions

Prediction markets like Polymarket and Kalshi differ from traditional sportsbooks in structure and incentives. Sportsbooks set odds to balance liability and profit; prediction markets rely on peer-to-peer trading, where participants directly buy and sell shares reflecting their beliefs. This market-driven pricing often reflects sharper, less biased forecasts because traders risk real capital on accuracy rather than betting against a fixed line. However, sportsbook odds may incorporate additional factors like injury reports or late-breaking news faster due to dedicated risk management teams.

Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Platform differences in user base, liquidity, and trading mechanics can create price gaps. Polymarket and Kalshi attract distinct trader demographics and may settle outcomes using slightly different verification timelines or sources. Liquidity concentration on one platform can amplify short-term volatility, while lower volume on the other may lag price discovery. Arbitrage traders exploit these spreads, but transaction costs and platform fees often prevent full convergence, leaving profitable opportunities for alert participants.

Key catalysts include recent grass court performance by both players, injury announcements, and tournament draw updates. Vekic and Eala's warm-up match results and seeding changes can shift trader conviction significantly. Weather forecasts closer to the event date may influence expectations, as grass courts play differently in wet or dry conditions. Media coverage, betting syndicate activity, and shifts in implied probability on Polymarket or Kalshi often precede broader market moves. Monitor both players' social media and official tournament communications for late-breaking developments.