Xander Zayas sat within a sparse crowd at Mandalay Bay’s Michelob ULTRA Arena on Saturday night. The Puerto Rican contender attended Sebastian Fundora’s relatively easy victory over Chordale Booker because he has been named the mandatory challenger for Fundora’s WBO junior middleweight title. Zayas was impressed by Fundora’s performance, though not by the size of the crowd that assembled to watch Fundora’s defenses of his WBC and WBO 154-pound championships.