Len Barker's perfect game
type: Thing
description: 1981 baseball game
additional property: PropertyValue
  property ID: P17
  value: United States
additional property: PropertyValue
  property ID: P31
  value: baseball game
additional property: PropertyValue
  property ID: P276
  value: Cleveland Stadium
additional property: PropertyValue
  property ID: P585
  value: May 15, 1981
additional property: PropertyValue
  property ID: P641
  value: baseball
additional property: PropertyValue
  property ID: P646
  value: /m/0_flthg
additional property: PropertyValue
  property ID: P1923
  value: Cleveland Guardians
additional property: PropertyValue
  property ID: P1923
  value: Toronto Blue Jays
confidence:
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    score: 0.0
    score pct: 0
    tier: long_tail
    components:
      sitelinks: 0
      sitelinks norm: 0.0
      unique citations: 1
      unique citations norm: 0.0
      monthly pageviews: 149
      monthly pageviews norm: 0.0
  sitelinks: 0
  unique citations: 1
  monthly pageviews: 149
  yearly pageviews: 228
  pageview trend:
    m: 2026-08
    v: 149
  pageview trend:
    m: 2026-07
    v: 30
  pageview trend:
    m: 2026-06
    v: 27
  pageview trend:
    m: 2026-05
    v: 22
  tier: long_tail
claims:
  P17:
    value: Q30
    source count: 0
    confidence: 0.0
    value label: United States
  P31:
    value: Q27927857
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    confidence: 0.0
    value label: baseball game
  P276:
    value: Q2113078
    source count: 1
    confidence: 0.2
    value label: Cleveland Stadium
  P585:
    value: +1981-05-15T00:00:00Z
    source count: 1
    confidence: 0.2
  P641:
    value: Q5369
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    confidence: 0.2
    value label: baseball
  P646:
    value: /m/0_flthg
    source count: 0
    confidence: 0.0
  P1923:
    value: Q642553
    source count: 0
    confidence: 0.0
    value label: Cleveland Guardians
  P1923:
    value: Q650829
    source count: 0
    confidence: 0.0
    value label: Toronto Blue Jays
citations:
  retrieved: 2026-01-13
meta:
  wikidata id: Q16838094
  domain: baseball_game
  level: standard
  html url: https://4ort.xyz/entity/len-barker-s-perfect-game
  markdown url: https://4ort.xyz/entity/len-barker-s-perfect-game.md
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  facts url full: https://4ort.xyz/entity/len-barker-s-perfect-game/facts.json
  data source: Wikidata (CC0 / public domain)
  license: https://creativecommons.org/publicdomain/zero/1.0/
  api version: v1
  served at: 2026-08-27T07:18:47.161008Z
  entity updated at: 2026-05-03T21:19:00.258443+00:00Z
  entity created at: 2026-05-03T14:56:03.215360+00:00Z