With 7.36 official Dota API stopped working.
Waiting for the fix for now and updating stuff to 7.36.
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NADCL Preseason Invitational (S4)

Major North American online league Preseason Invitational event

First Pick Dire Winrate: 40.0000

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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
lycanLycan250.00%
OpponentRankRev-RankWinrateAdvantageMatchesWonLostExpected matchesDeviationPercentage
juggernautJuggernaut100.0044.44100.00%50.00%11001100.00%
ogre_magiOgre Magi100.0044.44100.00%50.00%11001100.00%
undyingUndying100.0044.44100.00%50.00%11001100.00%
snapfireSnapfire100.0044.44100.00%50.00%11001100.00%
techiesTechies55.5655.5650.00%0.00%21102100.00%
beastmasterBeastmaster44.44100.000.00%-50.00%10101100.00%
venomancerVenomancer44.44100.000.00%-50.00%10101100.00%
legion_commanderLegion Commander44.44100.000.00%-50.00%10101100.00%
void_spiritVoid Spirit44.44100.000.00%-50.00%10101100.00%