With 7.36 official Dota API stopped working.
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RD2L Masters Season 2

An organized team league iteration of RD2L, with divisions separated by average team MMR, and played with a round-robin format before breaking out into playoffs

Total observer wards destroyed: 3633

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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
ancient_apparitionAncient Apparition3759.46%
OpponentRankRev-RankWinrateAdvantageMatchesWonLostExpected matchesDeviationPercentage
invokerInvoker100.0037.33100.00%40.54%4402250.00%
shadow_shamanShadow Shaman98.6712.00100.00%40.54%4403125.00%
ursaUrsa97.3333.33100.00%40.54%330300.00%
lunaLuna96.0032.00100.00%40.54%3302133.33%
axeAxe94.6761.3371.43%11.97%7523457.14%
lionLion93.3392.0055.56%-3.90%9546333.33%
snapfireSnapfire92.0038.6775.00%15.54%4313125.00%
alchemistAlchemist90.6741.3375.00%15.54%4312250.00%
rattletrapClockwerk90.6741.3375.00%15.54%4312250.00%
slardarSlardar88.0042.6775.00%15.54%4311375.00%
marsMars86.6744.0075.00%15.54%431400.00%
sand_kingSand King85.3345.3375.00%15.54%4313125.00%
night_stalkerNight Stalker84.0030.67100.00%40.54%2201150.00%
storm_spiritStorm Spirit82.6729.33100.00%40.54%220200.00%
grimstrokeGrimstroke81.3328.00100.00%40.54%2205-3-150.00%
oracleOracle80.0026.67100.00%40.54%220200.00%
phoenixPhoenix80.0026.67100.00%40.54%220200.00%
warlockWarlock77.3390.6750.00%-9.46%6333350.00%
rubickRubick76.0088.0050.00%-9.46%6334233.33%
ember_spiritEmber Spirit74.6789.3350.00%-9.46%6332466.67%
juggernautJuggernaut73.3348.0066.67%7.21%321300.00%
weaverWeaver72.0050.6766.67%7.21%3211266.67%
magnataurMagnus72.0050.6766.67%7.21%3211266.67%
skeleton_kingWraith King69.3348.0066.67%7.21%321300.00%
winter_wyvernWinter Wyvern68.0052.0066.67%7.21%3212133.33%
miranaMirana66.6778.6750.00%-9.46%4223125.00%
centaurCentaur Warrunner65.3380.0050.00%-9.46%422400.00%
bounty_hunterBounty Hunter64.0077.3350.00%-9.46%4221375.00%
abaddonAbaddon62.6724.00100.00%40.54%110100.00%
brewmasterBrewmaster61.3322.67100.00%40.54%11001100.00%
crystal_maidenCrystal Maiden60.0021.33100.00%40.54%110100.00%
obsidian_destroyerOutworld Destroyer60.0021.33100.00%40.54%110100.00%
hoodwinkHoodwink60.0034.67100.00%40.54%110100.00%
pangolierPangolier56.0018.67100.00%40.54%1102-1-100.00%
shadow_demonShadow Demon54.6717.33100.00%40.54%110100.00%
undyingUndying54.6717.33100.00%40.54%110100.00%
tuskTusk52.0013.33100.00%40.54%1103-2-200.00%
naga_sirenNaga Siren50.671.33100.00%40.54%11001100.00%
wispIo49.3310.67100.00%40.54%110100.00%
medusaMedusa48.009.33100.00%40.54%1102-1-100.00%
drow_rangerDrow Ranger46.678.00100.00%40.54%110100.00%
broodmotherBroodmother45.336.67100.00%40.54%11001100.00%
templar_assassinTemplar Assassin44.005.33100.00%40.54%110100.00%
dark_seerDark Seer44.005.33100.00%40.54%110100.00%
furionNature's Prophet44.005.33100.00%40.54%110100.00%
faceless_voidFaceless Void44.0017.33100.00%40.54%110100.00%
viperViper38.6736.00100.00%40.54%1102-1-100.00%
razorRazor37.3393.3340.00%-19.46%5232360.00%
tinyTiny36.0054.6750.00%-9.46%211200.00%
jakiroJakiro36.0054.6750.00%-9.46%211200.00%
clinkzClinkz33.3356.0050.00%-9.46%2111150.00%
witch_doctorWitch Doctor32.0057.3350.00%-9.46%2113-1-50.00%
dark_willowDark Willow30.6758.6750.00%-9.46%211200.00%
troll_warlordTroll Warlord29.3360.0050.00%-9.46%2111150.00%
monkey_kingMonkey King28.0085.3333.33%-26.13%3122133.33%
spectreSpectre28.0085.3333.33%-26.13%3122133.33%
abyssal_underlordUnderlord25.3386.6733.33%-26.13%312300.00%
zuusZeus24.0081.3333.33%-26.13%3121266.67%
nyx_assassinNyx Assassin22.6785.3333.33%-26.13%3122133.33%
tidehunterTidehunter21.3398.6725.00%-34.46%4133125.00%
linaLina20.0066.670.00%-59.46%1012-1-100.00%
lichLich20.0072.000.00%-59.46%1012-1-100.00%
enigmaEnigma17.3396.000.00%-59.46%2021150.00%
bristlebackBristleback16.0072.000.00%-59.46%1012-1-100.00%
terrorbladeTerrorblade14.6774.670.00%-59.46%10101100.00%
sniperSniper14.6774.670.00%-59.46%10101100.00%
legion_commanderLegion Commander12.0076.000.00%-59.46%1012-1-100.00%
venomancerVenomancer10.6769.330.00%-59.46%101100.00%
shredderTimbersaw9.3366.670.00%-59.46%1012-1-100.00%
death_prophetDeath Prophet8.0094.670.00%-59.46%2023-1-50.00%
puckPuck6.67100.000.00%-59.46%4045-1-25.00%
phantom_lancerPhantom Lancer5.3366.670.00%-59.46%1012-1-100.00%
life_stealerLifestealer5.3366.670.00%-59.46%1012-1-100.00%
bloodseekerBloodseeker2.6797.330.00%-59.46%202200.00%
svenSven1.3369.330.00%-59.46%101100.00%