Kỷ lục KDA 50 không chết trong Dota 2: Hai cầu thủ đạt được kỳ tích đáng kinh ngạc

core_answer: Two Dota 2 players achieved KDA 50 with zero deaths (bzm and Shirley) while Vol recorded 27 deaths in one match, revealing limits of traditional stats for player value.
key_facts: bzm (OG) had KDA 50 (27/0/23) in 44 min at PGL Arlington Major 2022; Shirley (CAVALRY) had KDA 50 (10/0/40) in 22 min at SL i-League 2017 qualifiers; Vol (Blue Pikachu) had 27 deaths in 51 min at ESL One Katowice 2018 qualifiers; flyfly missed record with KDA 49; Additional records by Puppey, SumaiL, Illidan, Madara, TaiLung
source_attribution: Stage-2 professional analysis of Dota 2 records (historical matches 2017-2022)
related_qa: Who achieved the KDA 50 record? bzm and Shirley on Ember Spirit and Bounty Hunter respectively.; What was Vol's performance? 27 deaths on Centaur Warrunner in qualifiers.; Why focus on these records? To show traditional KDA does not capture full player impact.