Terence Crawford-Jeff Horn bout rescheduled for June 9 in Las Vegas

FILE – WBO junior welterweight champion Terence waits for the start of a round during his unification fight with WBC champion Viktor Postol of Ukraine at the MGM Grand Garden Arena on July 23, 2016 in Las Vegas, Nevada. Crawford won the fight by unanimous decision. Steve Marcus/Getty Images/AFP

LAS VEGAS — Unbeaten Terence “Bud” Crawford will challenge WBO champion Jeff Horn in his welterweight debut June 9 at the MGM Grand Garden Arena in Las Vegas.

Top Rank announced the matchup Thursday between Crawford and Horn, who won a unanimous decision over Manny Pacquiao last July.

Crawford (32-0, 23 knockouts), from Omaha, Nebraska, became the undisputed junior welterweight champion last August when he stopped Julius Indongo in the third round. Crawford became the first 140-pounder to unify all four major world titles.

Horn (18-0-1, 12 knockouts), from Brisbane, Australia, last fought in December and stopped Gary Corcoran in the 11th round to defend his WBO title.