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Ilkley: Dane Sweeny vs Billy Harris
polymarket
kalshi

Ilkley: Dane Sweeny vs Billy Harris

Volume:
$644,655

Dane Sweeny

all

2 markets

Kalshi

Polymarket

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 12, 2026

Closed: Jun 12, 12:40 PM EST

kalshi

Kalshi

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Join Kalshi and score $25 for your first trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Dane Sweeny

View
100%
Yes 100¢No 0¢
100¢
N/A
$392,786
N/A
N/A
$169,401
Settled
Yes
polymarket

Ilkley: Dane Sweeny vs Billy Harris

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$58,199
N/A
N/A
N/A
Settled
Yes
polymarket

Ilkley: Dane Sweeny vs Billy Harris Set 1 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$80
N/A
N/A
N/A
Settled
Yes
polymarket

Ilkley: Dane Sweeny vs Billy Harris Match O/U 22.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$42
N/A
N/A
N/A
Settled
Yes
polymarket

Ilkley: Dane Sweeny vs Billy Harris Match O/U 21.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$25
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$25
N/A
N/A
N/A
Settled
Yes
polymarket

Ilkley: Dane Sweeny vs Billy Harris Set 1 Winner

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$10
N/A
N/A
N/A
Settled
Yes
polymarket

Ilkley: Dane Sweeny vs Billy Harris Set Handicap +/-1.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$1
N/A
N/A
N/A
Settled
Yes
kalshi

Billy Harris

View
0%
Yes 0¢No 100¢
100¢
N/A
$193,481
N/A
N/A
$98,491
Settled
No
polymarket

Ilkley: Dane Sweeny vs Billy Harris Set Handicap +/-1.5

View
0%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

Ilkley: Dane Sweeny vs Billy Harris Match O/U 23.5

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

Ilkley: Dane Sweeny vs Billy Harris 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

Ilkley: Dane Sweeny vs Billy Harris Set 1 O/U 10.5

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

Ilkley: Dane Sweeny vs Billy Harris Total Sets: O/U 2.5

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

Ilkley: Dane Sweeny vs Billy Harris Set 2 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

Ilkley: Dane Sweeny vs Billy Harris Set 2 Winner

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

Ilkley: Dane Sweeny vs Billy Harris Set 2 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

Ilkley: Dane Sweeny vs Billy Harris Set 2 O/U 10.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
N/A
N/A
N/A
N/A
Settled
Yes
Total markets: 18

Description

This event group covers a professional tennis match between Dane Sweeny and Billy Harris at the 2026 ATP Challenger in Ilkley, with markets spanning match winner, set outcomes, game totals, and completion status. The match was originally scheduled for June 10-11, 2026 at approximately 5:00-6:00 AM ET.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Polymarket provides granular edge-case handling (walkovers, retirements, delays, cancellations) with explicit 50-50 outcomes, while Kalshi uses a minimal binary framework focused only on whether a ball was played, leaving retirement and forfeit scenarios ambiguous.Hero tip: Traders should rely on Polymarket's detailed rules for edge-case protection. On Kalshi, the phrase 'after a ball has been played' likely covers retirements mid-match but does not address walkovers or pre-match withdrawals—request clarification before trading large positions. Both platforms agree that official ATP Tour statistics are the primary source.

Critical divergence points:

  • Polymarket: Explicit multi-outcome framework: match winner resolves to named player if they advance; walkover resolves 50-50; retirement/default resolves to advancing player; cancellation or 7+ day delay without result resolves 50-50. Completion market resolves No if match is not finished for any reason including forfeit. Key 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: Binary outcome framework: resolves Yes if either player wins 'after a ball has been played.' No explicit guidance on walkovers, retirements, cancellations, or delays. Implicitly assumes a winner will be determined but does not specify handling of incomplete matches or forfeits. Key quote: 'If Dane Sweeny wins the Sweeny vs Harris professional tennis match in the 2026 ATP Challenger Ilkley Round Of 16 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 Dane Sweeny and Billy Harris in the Ilkley, originally scheduled for June 10, 2026 at 6:00AM ET. This market will resolve to 'Dane Sweeny' if Dane Sweeny advances against Billy Harris. This market will resolve to 'Billy Harris' if Billy Harris advances against Dane Sweeny. 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 ATP Tour. A consensus of credible reporting may also be used.

Kalshi

Resolution requires that a ball has been played in the Sweeny vs Harris professional tennis match at the 2026 ATP Challenger Ilkley Round of 16. The market resolves to Yes for whichever player wins the match. If the match does not occur before play begins due to injury, walkover, forfeiture, or other cancellation, the market resolves to a fair price per the rules. If the match is postponed or delayed, the market remains open and closes after the rescheduled match concludes within two weeks.

Frequently asked questions

Prediction market odds and traditional sportsbook odds often diverge because they reflect different incentive structures. Sportsbooks set lines to balance action and lock in profit margins, while prediction markets are driven purely by trader belief and capital allocation. On this market, you're seeing real-money bets from thousands of independent participants rather than a bookmaker's calculated spread. This can make prediction markets more responsive to new information and less subject to the house edge built into sportsbook pricing, though both sources offer valuable signals for informed decision-making.

Polymarket and Kalshi may show different odds due to variations in user base, liquidity depth, and market microstructure. 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. Each platform attracts traders with different risk tolerances and information sets, so prices can lag or lead depending on where new money flows first. Liquidity imbalances also matter: thinner order books on one venue can amplify price swings, while deeper pools on another keep pricing more stable. Arbitrage traders work to close these gaps, but temporary spreads often persist, creating opportunities for sharp bettors monitoring both sites.

Key catalysts include fighter interviews, training footage, weigh-in results, and any injury announcements from either camp. Betting action on external sportsbooks can also influence prediction market prices as sharp money moves between venues. Media coverage and expert commentary often trigger repricing as new analysis reaches traders. Recent performance clips, strength-and-conditioning updates, or coaching changes would all carry weight. Watch for late-breaking news in the 48 hours before the event, when final adjustments typically occur and volatility often spikes across both platforms.