Thom Brennaman is officially OUT as Cincinnati Reds play-by-play man ... the 57-year-old formally resigned from his position weeks after he used a homophobic slur on air.
Remember, back on Aug. 19, Brennaman was broadcasting the Reds-Royals game ... when he was caught on a microphone referring to a place as "one of the f** capitals of the world."
Brennamn had been indefinitely suspended by the team over the comment ... but on Friday, Thom announced he was officially stepping away from the broadcasting position for good.
"My family and I have decided that I am going to step away from my role as the television voice of the Cincinnati Reds,” Brennaman told WCPO in Cincinnati.