ITF Ollersbach: Kalin Ivanovski vs Aleksander Chayka
Probability
90¢
1h
+0.5pp
24h
+39.8pp
24h Vol
$968.81
Liquidity
$2.3K
Canonical status
confidence: highSource status (Polymarket)
Derived status (Orrery)
Reason
Active market, expiry beyond the near-expiry window.
Resolution & Risk
LOW risk- End date
- Jul 28, 2026
- UMA status
- n/a
- Resolution source
- Market type
- Binary
- Wide spread (5.1¢) — liquidity risk on entry/exit.
Probability (last 7 days)
+0.0pp 7dWhy did it move?
Structured · 2 factors- 01Price move
Up 40pp over 24h
Now 90¢; +0.5pp in the last hour.
- 02Spread cost
Wide spread — 5.1¢
Bid-ask spread is wide enough that intraday moves overstate any tradeable advantage. Most of the headline pp move would be eaten by spread on a market order.
What to track next
- Set an alert if probability drops back below 85¢ — that's where this move would be reversing.
- Add to your watchlist — Home will show probability deltas since your last visit.
- Compare against sibling markets in the same event below — divergent pricing across related contracts is the cleanest tell.
Verification actions only — never trade recommendations.
Each factor is grounded in a single named metric you can verify on this page — probability, volume, liquidity, signal, resolution state. No predictions, no prose hallucinations.
Resolution & Risk
LOW risk- End date
- Jul 28, 2026
- UMA status
- n/a
- Resolution source
- Market type
- Binary
- Wide spread (5.1¢) — liquidity risk on entry/exit.
Verification Brief
A guided checklist for what must be proven before this market is treated as reliable context.
The market is live. Track source, liquidity, and wording before escalating it to a resolution-sensitive task.
Create trust-state alertVerification goal
Map resolution-relevant sources to the exact criteria needed to avoid misreading price as settlement.
What needs proof
Primary source
requiredConfirm the primary news consensus source and whether it directly answers the market's resolution question.
Current evidence: https://www.itftennis.com/en/tournament-calendar/
Contract wording
requiredExtract the exact condition that makes YES resolve true and note any exclusions, time zone, deadline, or fallback rule.
Orrery verification task ITF Ollersbach: Kalin Ivanovski vs Aleksander Chayka State: Live — live monitoring Need sources for: 1. Primary source: Confirm the primary news consensus source and whether it directly answers the market's resolution question. 2. Contract wording: Extract the exact condition that makes YES resolve true and note any exclusions, time zone, deadline, or fallback rule. 3. Liquidity context: Check whether the move is supported by enough liquidity and volume to treat it as meaningful context. Drop only durable links that map to one criterion. Research only. Not trade advice.
Orrery verification brief ITF Ollersbach: Kalin Ivanovski vs Aleksander Chayka State: live monitoring Verify: Primary source + Contract wording Price is not settlement. Research only. Not trade advice.
Market link goes in reply
A controlled loop for durable sources. Every source must answer one criterion from this Verification Brief.
Sources
0
Criteria covered
0
Reviewed
0
Awaiting review
0
Submit a source mapped to a criterion
Recent source checks
Pilot audit summary
Research only · Not trade advice · Every source maps to one criterion
Timeline
critical · price · trade flowCritical
- Jul 28, 00:00 UTCScheduled resolutionLOW
Market resolves in 145.3h
Price movement
+39.8pp over the last 24h, now 90¢.
Recent Trades
No recent trades visible from the Data API for this market. That usually means liquidity is thin or this market is between event windows.
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Market Description
This market refers to the tennis match between Kalin Ivanovski and Aleksander Chayka in the ITF Men Ollersbach, originally scheduled for July 20, 2026 at 8:00PM ET. This market will resolve to 'Kalin Ivanovski' if Kalin Ivanovski advances against Aleksander Chayka. This market will resolve to 'Aleksander Chayka' if Aleksander Chayka advances against Kalin Ivanovski. 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.
Why this category?
confidence: highCategory
Source
Matched term
tennis matchReason
Generic tennis-match marker.
Categories come from a deterministic engine: manual overrides (highest priority) → sports hard markers → event-tag rules → keyword rules → Gamma category hint → default. The engine is versioned in category-overrides.ts; methodology lives at /methodology.
FAQ — questions readers actually ask
What is the current Polymarket probability for "ITF Ollersbach: Kalin Ivanovski vs Aleksander Chayka"?
As of Tue, 21 Jul 2026 22:39:42 GMT, YES is priced at 90% implied probability on Polymarket. The price changed +39.8pp in the last 24 hours, +0.5pp in the last hour, and +0.0pp in the last 7 days.
When does this market resolve?
This market resolves by Jul 28, 2026 (2026-07-28T00:00:00.000Z). Resolution is determined from https://www.itftennis.com/en/tournament-calendar/.
What source determines the outcome?
Resolution is sourced from https://www.itftennis.com/en/tournament-calendar/. Polymarket's UMA optimistic oracle is the final settlement layer; if the published source is ambiguous, UMA tokenholders adjudicate. Source-extraction confidence is shown in the Resolution & Risk block above.
How much is being traded on this market?
$968.81 of trading volume in the last 24 hours. Lifetime volume on Polymarket: $968.81. Open liquidity in the YES/NO orderbooks: $2.3K. Spread between best bid and best ask: 5.1¢.
Is this a trade recommendation?
No. Orrery describes — never predicts. Every signal on this market carries explicit Evidence, Backtest, and Action tiers. The Action is always one of: Watch only, Inspect timeline, Create alert, Verify source, or Ignore — never Buy or Sell. The probability above is the market's collective implied probability, not a forecast Orrery is publishing.
How fresh is this data and where does it come from?
This page revalidates from the public Polymarket APIs every 30 seconds. Probability and 24h-change come from Gamma; the chart series comes from the CLOB orderbook history; trade and holder data come from the Data API. The fetched-at timestamp on each block tells you exactly how old the underlying upstream pull was.
Alerts
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