It's rare that you see Serena kicking off like that - something must have really gotten to her.

"something" like getting called for a fucking footfault that puts you down matchpoint in a major smifinal

who the fuck calls a footfault THEN ??
she should've punch the moronic judge
who fucking said to the head umpire Serena said "I'll kill you"
and fucking made her lose the match through automatic DQ
WTF ??
the asian moron lady should be never allowed to ever umpire