Miami Beach police detective Vivian Thayer told The Associated Press that Dunbar was arrested after getting into a fight outside Dream Nightclub in South Beach. Dunbar and Greene each face charges of battery and disorderly conduct, according to the report.
Dunbar, who played under Rams defensive coordinator Gregg Williams in New Orleans, signed a two-year contract with the Rams back in March. He's projected to start. He was suspended four games last season for violating the league's PED policy.
Greene, a first-round pick of the NBA's Memphis Grizzlies in 2008, played four seasons with the Sacramento Kings.