EAST RUTHERFORD, N.J. — Diego Maradona, of all people, should know how hard it is. He played for Argentina at seven major tournaments and coached in an eighth, advancing to two finals and winning only one. That triumph, at the 1986 World Cup in Mexico, is remembered by many as much for Maradona’s sleight of hand as the genius in his feet. When divine intervention is required to survive the quarters and your team blows a two-goal lead in the final, that should help you appreciate the fine margins deciding top international tournaments. It should leave you less inclined to pile additional pressure on countrymen still involved.