Three-time champions Nigeria today opened their FIFA U-17 World Cup campaign against twice champions and holders Mexico in Al Ain, winning out by an emphatic 6-1 scoreline.Striker Ulises Jaimes had a chance to score with his head after only three minutes, but the ball was deflected wide of danger by the scrambling Nigerian defence.Success Isaac, who seven times in the African qualifiers, raced in and rounded the goalkeeper, pulling the ball back across goal. Kelechi Iheanacho followed the play and produced a clever finish, hitting the ball high into the net to get over a pair of Mexican defenders.Seven minutes later, the No 10–hands-down, the best player on the pitch – scored again. The