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LAS VEGAS, NEVADA - JULY 20: Referee Robert Byrd (L) holds up the arm of Caleb Plant as he celebrates his third-round TKO victory over Mike Lee to retain his IBF super middleweight title at MGM Grand Garden Arena on July 20, 2019 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)

LAS VEGAS, NEVADA - JULY 20:  Referee Robert Byrd (L) holds up the arm of Caleb Plant as he celebrates his third-round TKO victory over Mike Lee to retain his IBF super middleweight title at MGM Grand Garden Arena on July 20, 2019 in Las Vegas, Nevada.  (Photo by Ethan Miller/Getty Images)