Sean explores some factors that could have led to what some are calling the biggest upset in MMA history, as Julianna Pena defeated Amanda Nunes by submission in Round 3 to capture the Bantamweight championship at UFC 269 whilst being a 12-to-1 underdog. Sean gives his thoughts on Pena's upset of Nunes in this episode of "The Sheehan Show."

TIMESTAMPS:

(00:00) Julianna Pena defeats Amanda Nunes to capture Bantamweight Championship

(06:06) A look into Amanda Nunes's performance at UFC 269.