A couple of things on Roman Greenberg's record:
http://www.boxrec.com/boxer_display.php?boxer_id=077065
First, the last name sholud be spelled GREENBERG and not Greenburg.
Second, on his last fight, Williams failed to answer the bell on the third round. So it should be listed as TKO3.
Again, check the Miami Herald for Greenberg's fight report
http://www.miami.com/mld/miamiherald/sports/5873262.htm