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24H VOL:

$133,388,117

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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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ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis
polymarket
kalshi

Who will win the ITF Skopje match: Ziegann vs Kountourakis?

Volume:
$75,425

Ioannis Kountourakis

 - Kalshi

Ioannis Kountourakis - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Jul 2, 2026

Closed: Jul 2, 8:31 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

Ioannis Kountourakis

View
100%
Yes 100¢No 0¢
100¢
N/A
$46,065
N/A
N/A
$34,276
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Set 1 O/U 9.5

View
100%
Yes 100¢No 0¢
20¢
N/A
$1,922
N/A
N/A
N/A
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Set 2 O/U 8.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$20
N/A
N/A
N/A
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Set 2 O/U 9.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$20
N/A
N/A
N/A
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Match O/U 21.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$7
N/A
N/A
N/A
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Total Sets: O/U 2.5

View
100%
Yes 100¢No 0¢
0.1¢
N/A
$3
N/A
N/A
N/A
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Match O/U 22.5

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

Sam Ryan Ziegann

View
0%
Yes 0¢No 100¢
100¢
N/A
$21,015
N/A
N/A
$11,542
Settled
No
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Set 1 Winner

View
0%
Yes 0¢No 100¢
—
N/A
$5,062
N/A
N/A
N/A
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Set 1 O/U 10.5

View
0%
Yes 0¢No 100¢
—
N/A
$991
N/A
N/A
N/A
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis

View
0%
Yes 0¢No 100¢
—
N/A
$315
N/A
N/A
N/A
Settled
Yes
polymarket

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Set Handicap +/-1.5

View
0%
Yes 0¢No 100¢
—
N/A
$3
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

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Match O/U 23.5

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

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis Set 2 Winner

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

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis 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

ITF Skopje: Sam Ryan Ziegann vs Ioannis Kountourakis 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: 17

Description

This event group covers a professional tennis match between Sam Ryan Ziegann and Ioannis Kountourakis at the ITF Men's tournament in Skopje, scheduled for July 1, 2026 at 7:45 AM ET. The group includes 18 markets across Polymarket and Kalshi covering match winner, set winners, game totals, and completion status.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Polymarket and Kalshi define walkover and incomplete-match scenarios differently. Polymarket explicitly resolves walkovers to 50-50 and requires a completed match for winner determination; Kalshi requires only that a ball be played, creating ambiguity around pre-match withdrawals and mid-match retirements.Hero tip: Treat Polymarket and Kalshi as separate settlement universes for this match. Polymarket's 50-50 walkover rule is explicit and protective; Kalshi's "ball played" standard is permissive and may award a winner even if the match never truly began competitively. If the match is withdrawn before play or ends via retirement before completion, expect Polymarket to resolve 50-50 while Kalshi may resolve to the advancing player. Hedge accordingly or seek Kalshi clarification before the event.

Critical divergence points:

  • Polymarket: Comprehensive edge-case framework. Match winner resolves to the named player only if they advance through normal play or opponent retirement/default/disqualification mid-match. Walkover (pre-match withdrawal) = 50-50. Cancellation, tie, or delay >7 days without result = 50-50. Set and game markets also resolve 50-50 if not completed. 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: Minimal binary framework. Either player wins if the match occurs 'after a ball has been played.' No explicit rules for walkovers, retirements, delays, or incomplete matches. Ambiguous whether a pre-match withdrawal or mid-match retirement counts as a valid resolution. Key Quote: 'If Ioannis Kountourakis wins the Ryan Ziegann vs Kountourakis professional tennis match in the 2026 M25 Skopje 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 Sam Ryan Ziegann and Ioannis Kountourakis in the ITF Men Skopje, originally scheduled for July 1, 2026 at 7:45AM ET. This market will resolve to 'Sam Ryan Ziegann' if Sam Ryan Ziegann advances against Ioannis Kountourakis. This market will resolve to 'Ioannis Kountourakis' if Ioannis Kountourakis advances against Sam Ryan Ziegann. 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 International Tennis Federation (ITF). A consensus of credible reporting may also be used.

Kalshi

Markets resolve based on the winner of the Ryan Ziegann vs Kountourakis professional tennis match in the 2026 M25 Skopje Round of 32, contingent upon a ball being played. If the match does not occur before play begins due to injury, walkover, forfeiture, or other cancellation, all markets resolve to $0.50. If a player withdraws or forfeits after the match has started, that player's market resolves to No. Postponements or delays do not close the market; it remains open and resolves after the rescheduled match concludes within two weeks.

Frequently asked questions

Prediction markets and sportsbooks price tennis matches differently because they operate under distinct incentive structures. Sportsbooks set odds to balance their book and manage risk, often incorporating a margin. Prediction markets like those tracked here rely on trader consensus and real-money commitment, which can surface sharper, less biased estimates when liquidity is deep. This market's activity level suggests meaningful participation, though direct sportsbook comparison requires checking live lines independently. Both sources reflect available information, but their divergence often highlights where public opinion and professional oddsmakers disagree most.

Several factors may shift odds before the match begins. Recent player form, head-to-head records, and injury reports are classic catalysts; any news about either competitor's fitness or recent tournament results can trigger repricing. Court surface conditions, weather forecasts, and draw positioning also influence trader sentiment. As the match date approaches, late money and sharp action often accelerate moves. Once play starts, live score updates and momentum swings will likely drive rapid volatility, especially if one player takes an early lead or faces a comeback scenario.