BO5
Best of five
Example
They usually do bo3s for all matches up to the semifinals and finals, which are bo5s
BO5 definition by Slang.net
This page explains what the acronym "BO5" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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BO5 is an acronym for best of 5, which is a match style where a player must win three out of five games in order to win. It is typically used in video games or in sports matches.
The term is similar to the BO3 acronym, which is the match style where a player must win two out of three games in order to win. The term is often used in online games, such as League of Legends (LoL), Defense of the Ancients (DotA), and StarCraft 2 (Sc2).