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RD2L Season 21

Season 21 of the RD2L (formerly known as Reddit Dota 2 League), a casual Draft League

Average number of buybacks per game by Dire: 2.5889

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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
dazzleDazzle2040.00%
OpponentRankRev-RankWinrateAdvantageMatchesWonLostExpected matchesDeviationPercentage
earth_spiritEarth Spirit100.001.61100.00%60.00%22002100.00%
rubickRubick98.3911.29100.00%60.00%220200.00%
life_stealerLifestealer96.7725.81100.00%60.00%2201150.00%
snapfireSnapfire95.1687.1050.00%10.00%6333350.00%
lichLich93.5533.8766.67%26.67%3212133.33%
monkey_kingMonkey King91.9432.2666.67%26.67%3211266.67%
abaddonAbaddon90.3230.6566.67%26.67%32103100.00%
rattletrapClockwerk88.7129.0366.67%26.67%3212133.33%
jakiroJakiro87.1083.8750.00%10.00%422400.00%
lycanLycan85.4824.19100.00%60.00%11001100.00%
winter_wyvernWinter Wyvern83.8722.58100.00%60.00%110100.00%
meepoMeepo82.2620.97100.00%60.00%11001100.00%
troll_warlordTroll Warlord80.6527.42100.00%60.00%110100.00%
bristlebackBristleback79.0317.74100.00%60.00%11001100.00%
bounty_hunterBounty Hunter79.0317.74100.00%60.00%11001100.00%
disruptorDisruptor75.8114.52100.00%60.00%110100.00%
razorRazor74.1912.90100.00%60.00%11001100.00%
phantom_assassinPhantom Assassin72.5819.35100.00%60.00%1102-1-100.00%
death_prophetDeath Prophet70.979.68100.00%60.00%110100.00%
naga_sirenNaga Siren69.358.06100.00%60.00%11001100.00%
sniperSniper69.358.06100.00%60.00%11001100.00%
tidehunterTidehunter66.134.84100.00%60.00%110100.00%
tinyTiny64.523.23100.00%60.00%1102-1-100.00%
kunkkaKunkka62.9040.3250.00%10.00%2111150.00%
enigmaEnigma61.2941.9450.00%10.00%21102100.00%
sand_kingSand King59.6843.5550.00%10.00%211200.00%
ogre_magiOgre Magi59.6838.7150.00%10.00%211200.00%
void_spiritVoid Spirit59.6838.7150.00%10.00%211200.00%
spectreSpectre59.6838.7150.00%10.00%211200.00%
axeAxe53.2385.4833.33%-6.67%3121266.67%
miranaMirana51.6145.160.00%-40.00%101100.00%
phoenixPhoenix50.0096.770.00%-40.00%202200.00%
elder_titanElder Titan48.3946.770.00%-40.00%10101100.00%
skywrath_mageSkywrath Mage48.3966.130.00%-40.00%10101100.00%
tuskTusk45.1651.610.00%-40.00%101100.00%
pangolierPangolier45.1674.190.00%-40.00%101100.00%
shredderTimbersaw45.1682.260.00%-40.00%101100.00%
ember_spiritEmber Spirit45.1682.260.00%-40.00%101100.00%
earthshakerEarthshaker45.1682.260.00%-40.00%101100.00%
slarkSlark37.1069.350.00%-40.00%10101100.00%
drow_rangerDrow Ranger35.4882.260.00%-40.00%101100.00%
abyssal_underlordUnderlord33.8775.810.00%-40.00%1012-1-100.00%
storm_spiritStorm Spirit32.2674.190.00%-40.00%101100.00%
morphlingMorphling32.2674.190.00%-40.00%101100.00%
clinkzClinkz29.0395.160.00%-40.00%2021150.00%
vengefulspiritVengeful Spirit29.0390.320.00%-40.00%2021150.00%
windrunnerWindranger25.8198.390.00%-40.00%3032133.33%
witch_doctorWitch Doctor24.1993.550.00%-40.00%202200.00%
warlockWarlock22.5867.740.00%-40.00%101100.00%
faceless_voidFaceless Void20.9793.550.00%-40.00%202200.00%
leshracLeshrac19.3566.130.00%-40.00%10101100.00%
puckPuck17.7462.900.00%-40.00%101100.00%
enchantressEnchantress16.1361.290.00%-40.00%10101100.00%
undyingUndying14.52100.000.00%-40.00%4042250.00%
night_stalkerNight Stalker12.9059.680.00%-40.00%101100.00%
invokerInvoker12.9059.680.00%-40.00%101100.00%
obsidian_destroyerOutworld Destroyer9.6856.450.00%-40.00%10101100.00%
svenSven8.0654.840.00%-40.00%1012-1-100.00%
lone_druidLone Druid6.4553.230.00%-40.00%10101100.00%
chaos_knightChaos Knight4.8451.610.00%-40.00%101100.00%
treantTreant Protector3.2390.320.00%-40.00%2021150.00%
antimageAnti-Mage1.6151.610.00%-40.00%101100.00%