1.3M views · 14K reactions | John Riel Casimero had won titles as a Light Flyweight and Flyweight before defeating Zolani Tete in 2019 for the WBO Bantamweight title. Watch #RigondeauxCasimero this weekend on Showtime Boxing  | Premier Boxing Champions | Facebook

247K views · 1.3K reactions | Unfazed by an early knockdown, Tim Tszyu resilience and tenacity were apparent in his US debut earlier this year when he defeated Terrell Gausha by unanimous decision. The WBO Junior Middleweight World Champion look to make the first defense of his world title when he battles streaking top contender Brian Mendoza this Saturday on Showtime Boxing. #TszyuMendoza | Premier Boxing Champions | Facebook