ATLANTA, July 5 : Knee-jerk coaching changes before World Cups are nothing new to African football, but only Morocco have made them work, bucking the trend again to advance deep in the tournament.Four years ago, their ground-breaking progress to the semi-final of the World Cup in Qatar came despite changing their coach three months before the tournament.They did the same again ahead of the finals in Canada, Mexico and the United States, where Morocco meet France in Boston in the first quarter-final on Thursday.Mohamed Ouahbi is proving to be an inspired replacement for Walid Regragui, who quit after the Africa Cup of Nations finals earlier this year. Regragui had not only taken Morocco to the World Cup semi-final but subsequently set a world record for 19 successive international wins, yet