Here is Igor Vovchanchyn fighting Tulio Palhares, Elias Rodrigues and Nick Nutter at the World Vale Tudo Championship 5 which took place on 2/3/98 in Brazil.
At the time, World Vale Tudo's rule set was no holds barred/NHB without rounds. Vovchanchyn (55-10), an MMA and combat sports legend, fought almost exclusively in tournaments until entering the Pride organization. Vovchanchyn hold career victores over Mark Kerr, Yuki Kondo, Gilbert Yvel, and a very fatigued Kazushi Sakuraba.
Tulio Palhares, his first opponent that night, does own a TKO at UFC 17.5. The rest of his career wasn't much to write home about. No clue what happened at the end.
Vovchanchyn next fought Elias Rodrigues who was brought in supposedly after UFC veteran Patrick Smith could not continue after his bout. It features maybe the most non nonchalant tap outs I've seen.
In the finale, Vovchanchyn fought NCAA All American from Ohio State Nick Nutter, and the rest is history.