Rances Barthelemy (21-0, 12 KOs) has given up his junior lightweight world title and will move up in weight.
According to Warriors Boxing promoter Leon Margules, Barthelemy's promoter, the fighter elected to relinquish his belt because he could no longer make the 130-pound division limit.
The 28-year-old Cuban defector, who lives in Miami, Florida, appeared to have won the title initially when he knocked out Argenis Mendez in the second round 13 months ago, but the KO blow came after the bell and when Mendez protested, the result of the bout was changed to a no decision.
When they met in a mandated rematch in July, Barthelemy won a unanimous decision to claim the title. Barthelemy made only one defense, scoring a shutout decision against Fernando Saucedo in October.
The IBF has ordered its two leading available contenders, Puerto Rico’s Jose Pedraza (19-0, 12 KOs) and former featherweight titlist Billy Dib (39-3, 23 KOs) of Australia, to fight for the vacant belt.