About Kōji Kitao
Kōji Kitao was a Japanese sumo wrestler (rikishi), professional wrestler, and mixed martial artist. His best result as a yokozuna came in November 1987 when he was runner-up for the seventh time, with a 13–2 record (losing at the hands of maegashira and also future professional wrestler, Takanofuji). Kitao had won 36 bouts in the last three tournaments and been runner-up in the last two, so the de facto promotional standard of "two tournament championships or the equivalent" was interpreted rather loosely. In his second tournament in the top division he defeated yokozuna Kitanoumi and was awarded the Outstanding Performance prize and promotion to komusubi.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.