Will there be more than 100 positive cases of COVID-19 among athletes at the 2020 Olympics?
Probability
0¢
1h
+0.0pp
24h
+0.0pp
24h Vol
$0.00
Liquidity
$115.64
Orrery restored this market from Polymarket's closed-market records. Treat the numbers below as last-known market context, then verify the resolution source before citing the outcome.
Canonical status
confidence: mediumSource status (Polymarket)
Derived status (Orrery)
Reason
Upstream marked the market closed/settled with NO price dominant.
Resolution & Risk
LOW risk- End date
- Aug 9, 2021
- UMA status
- n/a
- Resolution source
- Market type
- Binary
- Wide spread (100.0¢) — liquidity risk on entry/exit.
Probability (last 7 days)
+0.0pp 7dWhy did it move?
Structured · 2 factors- 01Active signal
Resolution-risk observation firing
Market has reached expiry. Watch the UMA dispute window.
- 02Spread cost
Wide spread — 100.0¢
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
- Verify the resolution source on this page — exchange feed, official release, news consensus — before treating any move as new information.
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
- Aug 9, 2021
- UMA status
- n/a
- Resolution source
- Market type
- Binary
- Wide spread (100.0¢) — 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 appears resolved. The useful check is whether the source and final oracle state match the displayed outcome.
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 source and whether it directly answers the market's resolution question.
Current evidence: https://olympics.com/tokyo-2020/en/notices/covid-19-positive-case-list
Contract wording
requiredExtract the exact condition that makes YES resolve true and note any exclusions, time zone, deadline, or fallback rule.
Orrery verification task Will there be more than 100 positive cases of COVID-19 among athletes at the 2020 Olympics? State: Resolved NO — officially resolved Need sources for: 1. Primary source: Confirm the primary 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 Will there be more than 100 positive cases of COVID-19 among athletes at the 2020 Olympics? State: officially resolved 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
- 19:36SignalLOW
Resolution risk
Market has reached expiry. Watch the UMA dispute window.
Price movement
+0.0pp over the last 24h, now 0¢.
Active signals
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.
Related Markets
1Market Description
This market will resolve to “Yes” if there are more 100 positive cases of COVID-19 among athletes at the 2020 Olympic Games in Tokyo, Japan. Otherwise, this market will resolve to “No.” The resolution source for this market will be the Olympics' official list of positive COVID-19 cases, currently available at https://olympics.com/tokyo-2020/en/notices/covid-19-positive-case-list (select the "Covid-19 Positive Case List" PDF). Specifically, a manual count will be done on the number of positive COVID-19 cases, where the date the case was reported (see “Date of positive case reported” column) is on or after July 23, 2021 (Opening Ceremony) and on or before August 8, 2021 (Closing Ceremony), and the person testing positive is an athlete (see the “Category” column, with cell values indicating “Athletes”). Note if the date of the Opening or Closing Ceremonies change, this market will still resolve on the number of positive cases among athletes between July 23, 2021 and August 8, 2021. This market will resolve on August 11, 2021, 12:00 PM ET, or any time earlier if the target number has been exceeded. If data covering the full range of dates is not available at the final check, the resolution source will be checked every 24 hours until August 18, 2021, 12:00 PM ET. If data is still not available at this time, this market will resolve 50-50. (Note if the current link to positive COVID-19 cases becomes unavailable, any official data source from the Olympics on positive COVID-19 cases will be used, so long as it contains the requisite information: positive COVID-19 cases, dates of the those cases, and whether those cases occurred within athletes.)
Why this category?
confidence: mediumCategory
Source
Matched term
covidReason
Question text contains "covid" — matched the Science keyword rule.
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 "Will there be more than 100 positive cases of COVID-19 among athletes at the 2020 Olympics?"?
As of Fri, 05 Jun 2026 19:36:35 GMT, YES is priced at 0% implied probability on Polymarket. The price changed +0.0pp in the last 24 hours, +0.0pp in the last hour, and +0.0pp in the last 7 days.
When does this market resolve?
This market resolves by Aug 9, 2021 (2021-08-09T00:00:00.000Z). Resolution is determined from https://olympics.com/tokyo-2020/en/notices/covid-19-positive-case-list.
What source determines the outcome?
Resolution is sourced from https://olympics.com/tokyo-2020/en/notices/covid-19-positive-case-list. 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?
$0.00 of trading volume in the last 24 hours. Lifetime volume on Polymarket: $12.2K. Open liquidity in the YES/NO orderbooks: $115.64. Spread between best bid and best ask: 100.0¢.
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
In-app banners fire as soon as a rule is satisfied. Email digests are wired to a server-side cron and continue while your tabs are closed. Telegram and Discord are planned — every existing rule will keep working as channels light up.
Top Holders
7 walletsNone.