Dota API issues are mostly resolved (but some matches in events reports might be missing)
Facets are coming soon, Builds section now has up-to-date stats builds.
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JDL 2021 Summer

Japan Dota League: Summer 2021 Season — Amateur Japanese league

Average match duration: 43.7400

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Explain this to me
The page shows a hero's winrates against certain enemies, as well as winrate advantage (difference in winrate compared to overall value). Higher rank and winrate mean opponent is easier for the hero, higher R-Rank means opponent is picked often and is less effective against the hero.
HeroMatchesWinrate
linaLina250.00%
OpponentRankRev-RankWinrateAdvantageMatchesWonLostExpected matchesDeviationPercentage
necrolyteNecrophos100.0050.00100.00%50.00%11001100.00%
templar_assassinTemplar Assassin100.0050.00100.00%50.00%11001100.00%
rubickRubick100.0050.00100.00%50.00%11001100.00%
disruptorDisruptor100.0050.00100.00%50.00%11001100.00%
marsMars100.0050.00100.00%50.00%11001100.00%
lionLion50.00100.000.00%-50.00%10101100.00%
lunaLuna50.00100.000.00%-50.00%10101100.00%
enchantressEnchantress50.00100.000.00%-50.00%10101100.00%
night_stalkerNight Stalker50.00100.000.00%-50.00%10101100.00%
invokerInvoker50.00100.000.00%-50.00%10101100.00%