TMZ has the blow-by-blow, so to speak, of Rihanna's awful night in Hancock Park. If you didn't think Chris Brown had a violence problem before, you will after reading it. Graphic police report stuff. Sample:

Rihanna told cops that Brown unleashed a second wave of punches, "during which time [Rihanna] interlocked her fingers behind her head and brought her elbows forward to protect her face." He continued to punch her on her left arm, which caused a contusion on her left tricep.

At that point Rihanna tried texting her assistant. Brown threw the phone out of the car, stopped the vehicle and Rihanna then tried opening her door to get out, but Brown sped off and the door shut with Rihanna inside.

Brown placed Rihanna in a headlock while he drove, then bit her on her left ear. The car eventually stopped and Rihanna took the keys out of the ignition, and Brown began to punch her again in the face and arms. He placed her in a headlock and started applying pressure to her carotid artery.

Brown received a sentence today of five years probation, 180 days of community labor supervised by the police chief in Richmond, Va., domestic violence counseling for a year and an order to stay 100 yards away from the singer. He could be lucky some fan of hers doesn't take him out back and kick his ass. Turns out there was a little history in the relationship.

Previously on LA Observed:
Chris Brown booked, Rihanna out of Grammy's
Rihanna 'bloody and bruised,' say the tabs