Badminton group match table

It's simple. First draw lots and divide them into four groups. There are 9 people in one group, and the seed players are divided into four groups. Then, play a round robin in the group. Two players from each group qualify and the quarter-finals are out. Then it is automatically divided into the upper half and the lower half according to the lottery number. The first pair in group A, the second pair in group B, the first pair in group B and the second pair in group A.. The two winners decide the final position. So is the lower half! In the end, the winners of the upper and lower districts entered the finals, and the losers decided to make three or four! In this case, there will be more competition! After grouping, you can also enter the knockout stage directly, but a group of nine players must play a qualifier in advance! Then only the first place in each group will qualify, and then it will be automatically divided into the upper and lower half areas for the rematch and final! If you play the knockout, you have to play 33 games, which should be the best choice!