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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Road to TI12 Group Stage - Day 3 - Seeding Decider

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Average couriers killed per game by Radiant: 0.7778

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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
puckPuck366.67%
OpponentRankRev-RankWinrateAdvantageMatchesWonLostExpected matchesDeviationPercentage
tinyTiny100.0058.33100.00%33.33%11001100.00%
pugnaPugna100.0058.33100.00%33.33%11001100.00%
invokerInvoker83.3341.67100.00%33.33%110100.00%
chaos_knightChaos Knight83.3341.67100.00%33.33%110100.00%
naga_sirenNaga Siren66.6725.00100.00%33.33%11001100.00%
centaurCentaur Warrunner66.6725.00100.00%33.33%11001100.00%
skywrath_mageSkywrath Mage66.6725.00100.00%33.33%11001100.00%
skeleton_kingWraith King41.6783.3350.00%-16.67%2111150.00%
ancient_apparitionAncient Apparition41.6783.3350.00%-16.67%2111150.00%
earth_spiritEarth Spirit41.6783.3350.00%-16.67%2111150.00%
spectreSpectre16.67100.000.00%-66.67%10101100.00%
phoenixPhoenix8.3391.670.00%-66.67%101100.00%