UFC 252 results: Marlon Vera, card's biggest underdog, hands Sean O'Malley first loss with TKO - MMA Junkie
USA Today
The talk all week was that Marlon Vera was a live underdog for his fight against the unbeaten Sean O’Malley. He showed why.
https://mmajunkie.usatoday.com/2020/08/ufc-252-results-marlon-vera-upsets-sean-omalley-underdog-knockout-injury