Derek Fisher was arrested for DUI Sunday after crashing his car on the 101 Freeway ... this after a night out at Catch in West Hollywood.
Derek's Cadillac flipped over just after 3 AM PT Sunday as he was heading northbound on the Ventura 101 Freeway. His passenger was "Basketball Wives" star Gloria Govan. Neither Derek nor Gloria were injured.
Derek was then arrested and jailed after it was determined he'd been drinking.
CHP officials say Derek veered into the paved right shoulder of the 101 just east of the 405 interchange.