Junior welterweight champion Danny Garcia, forced to relinquish one of his world title belts on Thursday, made one of boxing’s worst-kept secrets official on Monday — he will fight as a full-fledged 147-pound welterweight when he meets Paulie Malignaggi on Aug. 1 at Barclays Center in New York.

The scheduled 12-round bout, which will take place in former junior welterweight and welterweight titleholder Malignaggi’s home borough of Brooklyn, will headline the second Premier Boxing Champions card on ESPN (9 p.m. ET).

Promoter Lou DiBella, who is putting on the card on behalf of PBC founder Al Haymon, called it “a must-win situation for both fighters.”

Garcia (30-0, 17 KOs), 27, of Philadelphia, who has been troubled by making the 140-pound junior welterweight limit, had not defended his belts since March 2014, instead fighting his last two fights as nontitle bouts over 140 pounds, including a hard-fought majority decision against titleholder Lamont Peterson at contract weight of 143 pounds on April 11, also at Barclays Center.

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