Marlon Vera is the only man to have won over which UFC Bantamweight Champion?
Dominick Cruz
Henry Cejudo
TJ Dillashaw
Sean O'malley
Answer
Marlon Vera is the only man to have won over Sean O'malley. O'malley was a top bantamweight prospect who had won his first 12 fights in the UFC, including a knockout of Cody Garbrandt. Vera was a late replacement for an injured Jose Aldo and he took advantage of O'malley's overconfidence, knocking him out in the first round.
Unleashing the 'Chito' in Marlon Vera: The Ultimate Quiz on Ecuadorian MMA Sensation (Born 1992)