Warren Sapp arrested for a beatdown on the GF

Former NFL star Warren Sapp was arrested by Miami Beach police this afternoon and charged with misdemeanor domestic battery stemming from an allegedly violent confrontation with his girlfriend.

According to the Miami Beach Police Department, Sapp is accused of attacking his girlfriend of two years at around 5:00 AM Saturday at the Shore Club Hotel.

According to the arrest report, the alleged victim had "a swollen right knee and bruises on the back of her neck."

She claims Sapp allowed her to sleep in his hotel room -- then came into the room early in the morning and pulled her out of bed. The alleged victim says they began arguing about guys she was hanging out with earlier Friday night.

Sapp's girlfriend told cops that during the argument Sapp "grabbed her and began to choke her." He eventually threw her out of the room, she claims.