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Halle Open: Tallon Griekspoor vs Sho Shimabukuro
kalshi
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro

Volume:
$359,705

Over 28.5 games

 - Kalshi

Over 28.5 games - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jun 16, 2026

Closed: Jun 16, 9:16 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

Over 28.5 games

View
100%
Yes 100¢No 0¢
100¢
N/A
$2,121
N/A
N/A
$2,071
Settled
Yes
kalshi

Over 23.5 games

View
100%
Yes 100¢No 0¢
100¢
N/A
$1,764
N/A
N/A
$1,676
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Match O/U 23.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$205
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set 1 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$1,051
N/A
N/A
N/A
Settled
Yes
kalshi

Over 18.5 games

View
100%
Yes 100¢No 0¢
100¢
N/A
$951
N/A
N/A
$951
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set 1 O/U 9.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$747
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Total Sets: O/U 2.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$735
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Match O/U 22.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$205
N/A
N/A
N/A
Settled
Yes
polymarket

Completed Match

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$200
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set 2 Winner

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$74
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Match O/U 21.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$18
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set 2 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$5
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro

View
0%
Yes 0¢No 100¢
—
N/A
$350,466
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set 1 Winner

View
0%
Yes 0¢No 100¢
—
N/A
$949
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set Handicap +/-1.5

View
0%
Yes 0¢No 100¢
—
N/A
$187
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set 1 O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$16
N/A
N/A
N/A
Settled
Yes
polymarket

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set 2 O/U 9.5

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

Halle Open: Tallon Griekspoor vs Sho Shimabukuro Set 2 O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$5
N/A
N/A
N/A
Settled
Yes
Total markets: 18

Description

This event group covers a professional tennis match between Tallon Griekspoor and Sho Shimabukuro at the 2026 ATP Halle Open (Round of 32), scheduled for June 15, 2026 at 4:00 AM ET. Markets track both match completion status and match winner outcome, with resolution dependent on whether the match is played to completion under standard tennis rules.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Kalshi markets measure only game count thresholds without addressing match completion or forfeit scenarios, while Polymarket markets explicitly require full match completion and treat forfeits/retirements/walkovers as resolution triggers. This creates a fundamental scope mismatch: the same match outcome can resolve differently across platforms.Hero tip: Do not assume Kalshi and Polymarket markets will resolve identically. Kalshi's game-count logic is independent of match status; Polymarket's completion requirement is strict. If the match is abandoned, retired, or forfeited before reaching the threshold, Kalshi may resolve Yes while Polymarket resolves No. Cross-platform arbitrage risk is material.

Critical divergence points:

  • Kalshi: Three separate markets tied to game count thresholds (18.5, 23.5, 28.5). Each resolves Yes if the number of completed games in the full match exceeds its threshold. No explicit handling of forfeits, retirements, walkovers, or cancellations. Resolution is purely quantitative.
  • Polymarket: Match Completion market: Resolves Yes only if all games and sets required to determine a winner are played through normal play. Resolves No if match is not completed, forfeited, retired, canceled, delayed beyond 7 days, or ends in walkover. Winner market: Resolves to advancing player name if match completes (including retirement/default of opponent), or 50-50 if canceled/delayed/walkover. Explicit forfeit and completion logic.
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 Tallon Griekspoor and Sho Shimabukuro in the Halle Open, originally scheduled for June 15, 2026 at 4:00AM ET. This market will resolve to 'Tallon Griekspoor' if Tallon Griekspoor advances against Sho Shimabukuro. This market will resolve to 'Sho Shimabukuro' if Sho Shimabukuro advances against Tallon Griekspoor. 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

The event resolves based on the total number of completed games in the full match between Tallon Griekspoor and Sho Shimabukuro at the 2026 ATP Halle Round of 32. 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 and closes after 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 at the Exchange's discretion.

Frequently asked questions

Prediction markets and traditional sportsbooks price outcomes differently. Sportsbooks set odds to balance their book and lock in margin; prediction markets reflect live consensus from thousands of independent traders with real capital at stake. This market's odds on Polymarket and Kalshi often move faster than sportsbook lines because traders react instantly to news, injury reports, and public sentiment. Comparing the two can reveal mispricing opportunities, though prediction market odds tend to be more efficient over time due to continuous price discovery.

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 different trader demographics, liquidity pools, and fee structures. Polymarket and Kalshi use distinct market-making mechanisms and user bases, which can create temporary price gaps. Regulatory frameworks and contract specifications also vary—one platform may emphasize match winner while another tracks game totals. These differences mean identical events can trade at different odds across venues. Arbitrage traders often exploit these spreads, but gaps persist due to withdrawal friction and platform-specific trading costs.

Key catalysts include player injury announcements, recent form and head-to-head records, court surface conditions at the Halle Open, and betting syndicate activity. Withdrawal or retirement from the tournament would immediately shift odds. Media coverage of either player's preparation, coaching changes, or psychological factors can also trigger repricing. Watch for late-breaking news on fitness, equipment issues, or weather delays. Large block trades on either platform often signal informed positioning and can cascade into broader market moves as other traders react.