Nathan Cleverly has announced his retirement from boxing after losing to Badou Jack In Las Vegas on Saturday.
The referee stopped the bout in the fifth round as the 33-year-old Swede became the new WBA light-heavyweight champion.
The title fight featured on the undercard of the Mayweather-McGregor bout but Cleverly never looked as though he was going to win the encounter.
Cleverly started well but Jack landed a few left hooks in the second round from which the Welshman never recovered.
Jack forced a reeling Cleverly onto the ropes in the fifth round which prompted the referee Tony Weeks to call a halt to the fight.
Jack, who gave up his WBC title to move up a division, had previously drawn with IBF super-middleweight champion James DeGale and beaten WBA king George Groves.
Cleverly lost four of his 34 fights with other notable losses coming against Tony Bellew and Sergey Kovalev.
Cleverly announced his decision with a short statement on Twitter which read: "Well done to the new champ Badou Jack. Thank you for the opportunity to fight on this event. Also, a massive shout out to those that have supported me over the years.
"I've lived it and loved every second of this sport. A few too many miles on the clock. Time to say goodbye. Thank you and goodbye boxing."
Meanwhile, Billy Joe Saunders is 1/1 to beat Willie Monroe in September.
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