Spain registered their biggest-ever victory at the U-20 World Cup after humiliating debutants Tahiti 8-0 at Al-Salam Stadium in Cairo on Friday. The European heavyweights went to the locker room with a four-goal lead as Aaron Niguez and Emilio Nsue notched two goals apiece. Arsenal midfielder Fran Merida made it 5-0 in the 74th minute and substitute Kike scored a quick-fire double to further widen the gap. Ander Herrera completed the rout one minute from time to give Spain a remarkable victory in their Group B opener. Earlier in the day, Venezuela capitalized on their numerical advantage to claim a 1-0 victory over 10-man Nigeria. Nigeria's Lukman Haruna received a straight red card five minutes before the break for stamping on Francisco Flores. The Super Eagles paid for the dismissal on the stroke of halftime when Venezuela's Yonathan Del Valle struck the winner after some poor marking from the opposing defense.