Seven-division champion Amanda Serrano defends her WBA and WBO featherweight titles against Argentina's Lucrecia Manzur on Friday in California, in the first world championship boxing event streamed live on TikTok. A 33rd stoppage would give the 37-year-old Puerto Rican the most knockout wins in women's boxing history, eclipsing pioneer Christy Martin's 32.

This marks Serrano's penultimate bout in a 17-year career spanning 54 fights and world titles across seven weight classes. She credits Most Valuable Promotions co-founders Nakisa Bidarian and Jake Paul with transforming her career and the sport, embracing TikTok to reach younger audiences with daily lives and fan engagement. The 12-round fight will use two-minute rounds, which Serrano believes increases pace and knockout potential.

Beyond Friday, Serrano plans a farewell fight in Puerto Rico later this year or early 2027, while mentoring next-generation fighters like Krista Rosado and Alexis Chaparro under MVP. Though former undisputed super-bantamweight champion Ellie Scotney targets a featherweight showdown, Serrano remains focused on her exit. Long-time rival Katie Taylor also prepares for retirement, with Serrano noting they might share a Hall of Fame induction.