You could call it a low blow...Rockets great Kyle Lowry apparently let his temper get away from him.

Lowry is accused of throwing a basketball at a female referee twice and then threatening her in Las Vegas.

So what made him so mad after a simple pickup basketball game?

Well…He thought she made a bad call.

Wow?!

Lowry faces a judge next month and could spend six months in the slammer if he's convicted of misdemeanor battery.

With Lowry averaging more than 15 points a game, the biggest issue facing the Rockets is losing their star player.

It could be a big blow to the team, if he ends up in jail.