Who was the last guy who testified at a mob trial and ended up whacked afterwards?

Was it Joe Barboza in 1976?

George Yudzevich was whacked in California in 1988 after testifying against the Gambinos and LA families, but the feds aren't sure if it was a Gambino hit, an LA family hit, or a power struggle over a strip club he ran in LA.

Big George Yudzevich Hit

By contrast, Mr. Yudzevich's testimony at the Brooklyn trial was considered critical in obtaining convictions last December of the Gambino underboss, Joseph Armone, 70 years old, and two co-defendants, Anthony Vitta and Salvatore Migliorisi, both 49, according to Edward A. McDonald, chief of the Organized Crime Strike Force in Brooklyn. 'Kept That Agreement'

Also convicted with them was Joseph N. Gallo, 76, the group's former consiglieri. Mr. Armone, Mr. Gallo and Mr. Vitta were convicted of racketeering conspiracy and other charges. Mr. Migliorisi was convicted of extortion and obstruction.