Single round robin is that all participating teams can meet once, and finally rank according to the points and gains and losses of each team in all competitions.
Generally, the arrangement of single-cycle competition sequence adopts rotation method. No matter whether the teams are even or odd, they should be ranked even. If it is an odd number, you can add a "0", and the team that meets a "0" will have a bye.
This rotation method is suitable for teams that don't know each other's strength, so it is very likely that the strong teams will meet in advance by drawing lots and positioning.
Types of round robin:
1, one cycle
That is, all participating teams can meet once, and finally rank according to the points and gains and losses of each team in all competitions. If there are not many teams and the time and venue are guaranteed, this kind of competition is usually adopted.
2, double cycle
That is, all participating teams can meet twice, and finally rank according to the points and gains and losses of each team in all competitions in two periods. If there are few teams or more competition opportunities, double-cycle competition is usually adopted.
3, grouping cycle
That is, all participating teams are divided into several groups for the first-stage preliminaries, and then the second-stage finals are held among the winning teams in each group, and the ranking below 1 is decided.