Video: Justin Bieber Trains with Floyd Mayweather C.J. Tuttle Oct 17, 2014 Reader comments are active below. « Previous Pictures: Rubio, ‘GGG’ Open Workout Next Video: GGG vs. Rubio Final Press Conference » More Boxing: Jan Paul Rivera Knocks Out Daniel Bailey at Most Valuable Prospects 14Canelo vs. Crawford Undercard Announced for Netflix Boxing Event on Sept. 13Jake Paul to Face Gervonta 'Tank' Davis in Exhibition Bout on NetflixJulio Cesar Chavez Jr. Deported, Jailed in Mexico for Alleged Cartel TiesDarren Till Promises 'Demolition Job' on Luke Rockhold at Misfits Boxing 22
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