Graded lottery has a great influence on the team. In the same group, the strength of each team should be similar. But if a strong team is unfortunately assigned to a weaker group, then it has a greater chance of promotion. In addition, the graded lottery will also affect the mentality of teams in various countries or regions, which is often considered to be the key factor for entering the World Cup.
Graded lottery has been used in World Cup qualifiers for many years. Since 2002, the World Cup qualifiers have been drawn by stages to ensure that the teams in each group are at the same level. But it also means that some strong teams may lose in the qualifiers, thus missing the opportunity to enter the World Cup. Generally speaking, grading lottery is a process to ensure fairness and justice, which is helpful to improve the quality and appreciation of the competition.