GILBERTO “Zurdo” RAMIREZ, Mexico’s undefeated World Boxing Organization (WBO) super middleweight world champion with the matinee idol looks, two-time Mexican Olympian and undefeated No. 1 featherweight contender ÓSCAR VALDEZ, undefeated Top-10 world-rated welterweight contender JOSE BENAVIDEZ, JR , his opponent FRANCISCO SANTANA and Hall of Fame promoter BOB ARUM will host a Los Angeles news conference Next Tuesday May 31. The participants will be announcing their title fights on the Terence Crawford – Viktor Postol world championship pay-per-view undercard.