Baccari Rambo -- an ex-NFL safety who was an All-American in college -- was arrested this week ... after he was accused of raping a 21-year-old woman in Georgia.
Jail records show 29-year-old Rambo -- a sixth-round pick by the Washington Redskins in 2013 -- was booked into Clarke County Jail in Athens at 10:02 p.m. on Monday night.
Details surrounding the alleged incident are unclear ... we're working on it -- but cops say they launched a probe into rape allegations on June 13.
Officers say a 21-year-old female Univ.