Dota API issues are mostly resolved (but some matches in events reports might be missing)
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Competitive Meta - Last Two Weeks

Tier 1/2 tournaments stats for the past 14 days

Average number of buybacks per game by Radiant: 1.4659

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
dawnbreakerDawnbreaker333.33%
OpponentRankRev-RankWinrateAdvantageMatchesWonLostExpected matchesDeviationPercentageSame lane rateLane win rate
leshracLeshrac100.0025.00100.00%66.67%11001100.00%0.00%0.00%
enchantressEnchantress91.6716.67100.00%66.67%11001100.00%100.00%50.00%
legion_commanderLegion Commander83.338.33100.00%66.67%11001100.00%0.00%0.00%
tinyTiny75.0041.6750.00%16.67%2111150.00%100.00%25.00%
dark_willowDark Willow66.6733.3350.00%16.67%2111150.00%0.00%0.00%
miranaMirana58.3391.670.00%-33.33%10101100.00%100.00%0.00%
nevermoreShadow Fiend58.3391.670.00%-33.33%10101100.00%100.00%0.00%
sand_kingSand King41.6775.000.00%-33.33%10101100.00%0.00%0.00%
witch_doctorWitch Doctor33.33100.000.00%-33.33%20202100.00%0.00%0.00%
dragon_knightDragon Knight25.0075.000.00%-33.33%10101100.00%0.00%0.00%
nyx_assassinNyx Assassin25.0075.000.00%-33.33%10101100.00%0.00%0.00%
earth_spiritEarth Spirit25.0075.000.00%-33.33%10101100.00%0.00%0.00%