Answer:

melee

Answer	Crossword Clue
MELEE	Bench-clearer at the ballpark
MELEE	Donnybrook
MELEE	Free-for-all

MELEE	Ruckus
MELEE	Brawl
MELEE	Fracas
MELEE	Riot
MELEE	Row
MELEE	Fray
MELEE	Bench-clearing brawl
MELEE	Widespread composure loss

MELEE	Rhubarb
MELEE	Chaotic fight
MELEE	Scrap
MELEE	Confused fight
MELEE	Swinging affair?
MELEE	Brouhaha
MELEE	Group fight
MELEE	A beanball might lead to one

MELEE	Tavern tussle
MELEE	Bench clearer
MELEE	Tavern turmoil
MELEE	Barroom disorder
MELEE	Rowdydow
MELEE	Barroom brawl, for example
MELEE	Knock-down-drag-out
MELEE	Riotous fight

MELEE	Row in a bar, perhaps
MELEE	Battle royal
MELEE	Barnyard brawl
MELEE	State of tumultuous confusion
MELEE	Disorderly struggle
MELEE	Knock-down-drag-out fight
MELEE	Shoving match escalation
MELEE	Turmoil

MELEE	Big brawl
MELEE	Disorderly fight
MELEE	Barroom brawl
MELEE	More than a scuffle
MELEE	Confused battle