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Callum Smith will be paying close attention to Badou Jack vs. Lucian Bute

Super middleweight contender Callum Smith could face the winner of the fight between Badou Jack and Lucian Bute. Dave Thompson/Getty Images

A few notes from around the boxing world:

  • Super middleweight contender Callum Smith, the mandatory challenger for the winner of the fight between titleholder Badou Jack and Lucian Bute, will be ringside at the DC Armory in Washington, District of Columbia, on Saturday night (Showtime, 10 p.m. ET) to scout the fight. He also will serve as a pundit for the Sky Sports telecast of the card in England, home country of titleholder James DeGale, who will face mandatory challenger Rogelio “Porky” Medina in the co-feature. Smith (19-0, 14 KOs), 26, of England, blew out Hadillah Mohoumadi in the first round on April 2 to become Jack’s mandatory challenger. “I’m mandatory for the Jack-versus-Bute winner. If there’s a unification fight in the meantime I have no problem waiting for my shot -- and when it comes, I’ll win that title,” said Smith, who will have to wait while the Jack-Bute and DeGale-Medina meet later this year in a unification fight already set.

  • Russian middleweight Arif Magomedov (17-0, 10 KOs) will take on big underdog Andrew Hernandez (11-4-1, 3 KOs), of Phoenix, in a 10-round bout that will headline “Knockout Night at the D" on May 21 (CBS Sports Net, 11 p.m. ET) at the outdoor Downtown Las Vegas Events Center, Roy Jones Jr. Boxing Promotions announced. In the eight-round co-feature, super middleweight John Vera (12-0, 8 KOs), of Fort Worth, Texas, will face Joey Ruelas (10-1-1, 4 KOs), of Phoenix. Lightweight prospect Devin Haney (5-0, 3 KOs), a 17-year-old from Las Vegas, is scheduled to open the telecast against an opponent to be determined.

  • Super middleweight Peter Manfredo Jr. (40-7, 21 KOs), the popular fighter from the first season of the reality series “The Contender” a decade ago and two-time world title challenger, will face Vladine Biosse in a 10-rounder on May 13 at the Twin Rivers Casino in Lincoln, Rhode Island. Biosse (15-7-2, 7 KOs), 33, of Providence, Rhode Island, replaced Angel Camacho Jr. (15-0, 5 KOs), who broke his foot, on Friday. Manfredo, 35, also of Providence, is coming back after a 2 1/2-year retirement.