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NADCL Preseason Invitational (S4)

Major North American online league Preseason Invitational event

First Pick Radiant Ratio: 72.2222

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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
spirit_breakerSpirit Breaker977.78%
OpponentRankRev-RankWinrateAdvantageMatchesWonLostExpected matchesDeviationPercentage
pugnaPugna100.0050.00100.00%22.22%2201150.00%
storm_spiritStorm Spirit100.0043.33100.00%22.22%2201150.00%
shadow_demonShadow Demon100.0010.00100.00%22.22%2201150.00%
magnataurMagnus100.0010.00100.00%22.22%2201150.00%
queenofpainQueen of Pain86.6713.33100.00%22.22%220200.00%
broodmotherBroodmother83.3320.00100.00%22.22%2201150.00%
medusaMedusa83.3320.00100.00%22.22%2201150.00%
bounty_hunterBounty Hunter76.6776.6766.67%-11.11%3212133.33%
faceless_voidFaceless Void73.3373.3366.67%-11.11%3211266.67%
pangolierPangolier70.0023.33100.00%22.22%110100.00%
undyingUndying66.6726.67100.00%22.22%1102-1-100.00%
chaos_knightChaos Knight63.3330.00100.00%22.22%11001100.00%
terrorbladeTerrorblade60.0033.33100.00%22.22%110100.00%
enchantressEnchantress56.6740.00100.00%22.22%1102-1-100.00%
techiesTechies56.6740.00100.00%22.22%1102-1-100.00%
templar_assassinTemplar Assassin50.003.33100.00%22.22%110100.00%
venomancerVenomancer50.0046.67100.00%22.22%110100.00%
beastmasterBeastmaster50.0070.00100.00%22.22%110100.00%
lichLich50.0053.33100.00%22.22%110100.00%
tidehunterTidehunter36.6756.67100.00%22.22%11001100.00%
windrunnerWindranger33.3360.00100.00%22.22%1102-1-100.00%
nevermoreShadow Fiend30.0063.33100.00%22.22%11001100.00%
rubickRubick26.6770.00100.00%22.22%110100.00%
rattletrapClockwerk23.3386.6750.00%-27.78%2111150.00%
batriderBatrider23.3386.6750.00%-27.78%2111150.00%
legion_commanderLegion Commander23.3386.6750.00%-27.78%2111150.00%
crystal_maidenCrystal Maiden13.3393.330.00%-77.78%101100.00%
morphlingMorphling13.3393.330.00%-77.78%101100.00%
dark_seerDark Seer6.67100.000.00%-77.78%2021150.00%
void_spiritVoid Spirit3.3396.670.00%-77.78%1012-1-100.00%