Rihanna Bodyguard Throws KO Punch to paparazzo's Face

First Drake vs. Chris Brown ... and now ANOTHER fist fight over Rihanna ... but this one ended quickly.

It all went down Sunday night in London ... when a paparazzo (not a TMZ guy) got too close to Rihanna ... and one of the giants protecting the pop star unleashed a right cross that connected ... HARD.

Keep your eyes on the huge guy with the bald head ... who was trying to clear out a space in front of Rihanna's ride as she tried to exit the Whiskey Mist nightclub.

The bodyguard wasn't in the mood to talk things out with the photog ... and fired off one punch that sent the shutterbug down for the count. It's unclear if the pap ever got up.

Rihanna missed the action -- she was already inside her car when the knockout punch was thrown.

Rihanna -- Bodyguard Throws Knockout Punch to Pap's Face | TMZ.com

I Came in here thinking Papoose got KTFO [pic]

[pic]

never.

[pic] This gonna be a hot topic just off the strength that niccas wanted it to be Papoose.

weak punch pap is a !!

[pic] soon as i saw "pap" i came in here looking for a pic of my nicca papoose laid out on the ground

where papoose at?

me too [pic]

I was definintely confused when I didn't see any type of Gs in the video.

Is Rihanna that serious that people follow her every move? I wish the money generated by TMZ, Us Weekly and the smut rags went to children's literacy.

I wanted it to be[pic]

the hate in my blood was hoping papoose took KO [pic]

I Came in here thinking Papoose got KTFO [pic]

Wanted to Papooses weak[..] get knocked out.

was hoping Papoose

i just knew papoose was getting knocked out in this thread

I Came in here thinking Papoose got KTFO [pic]

i came in here expecting a member of the paparazzi to get knocked out. all i saw was a love tap and a tumble.

Knocked out? That was barely a flick....[pic]