Carlos Boozer Files for Divorce ... Second Time Not a Charm

Chicago Bulls star Carlos Boozer has filed for divorce ... for the second time ... from the same woman.

TMZ Sports has learned ... Boozer filed legal docs in Miami last week, alleging his marriage to Cindy Boozer was "irretrievably broken."

Here's what makes this interesting ... Carlos and Cindy divorced in 2010 after an 8-year marriage and 3 kids ... after allegations he had an affair with a contestant on "The Bachelor" in 2009. They remarried in March, 2012, but it clearly was not to last.