Thieves hit the jackpot when they robbed Paul Pierce.

They hit the baller-turned-trainwreck's Los Angeles mansion Friday night when wasn't home

The haul was over 100K in cash, several luxury watches, and an entire safe.

LA has been plagued with criminal gangs who use high-tech equipment to jam security systems.

Paul Pierce is also known to enjoy the company of ladies of the night, so the chances of him being set up are fairly high.

Cops are currently reviewing security footage to see if they can get any leads.