July 6 : Spain coach Luis de la Fuente hailed Lamine Yamal's performance in Monday's 1-0 victory over Portugal as one of the most important of the 18-year-old's burgeoning career as the European champions advanced to the World Cup quarter-finals.Substitute Mikel Merino struck in the 91st minute in Arlington to send Spain into the last eight for the first time since they won their only World Cup in 2010."For me, Lamine has played one of the most important matches of his life," de la Fuente said. "Beyond whether he was brilliant or not, for me it has been one of the matches that will help him grow the most."Lamine arrived at the World Cup managing a troublesome hamstring injury and started Spain's campaign on the bench as they were held to a goalless draw by Cape Verde. He returned to the st