MEXICO CITY, July 6 : Mexico's World Cup ended in heartbreak against England, but after a tournament that exceeded expectations, restored belief and revealed a promising new generation, incoming coach Rafael Marquez inherits the task of proving one memorable tournament can become lasting progress.A 3-2 defeat by England in the last 16 denied the co-hosts a first World Cup quarter-final since 1986, yet Mexico leave their home tournament in a markedly different position from where they began it.After years of criticism for stagnant performances and a string of disappointing World Cup campaigns, Javier Aguirre's side won four consecutive matches without conceding a goal, topped Group A, ended a 40-year wait for a World Cup knockout victory and reignited optimism around the national team befor