In a round robin, each team should play every other team exactly once. If there
are two teams per game, this is relatively simple to achieve. Below is an example
for a tournament with six teams.
First, each team plays the team immediately above/below them: |

Game | |||||||
---|---|---|---|---|---|---|---|

A | B | C | D | E | F | ||

Team | 1 | R | G | ||||

2 | G | R | |||||

3 | G | R | |||||

4 | G | R | |||||

5 | G | R | |||||

6 | G | R |

After this, we can see that team 1 has played teams 2 and 6; team 2 has played teams 1 and 3; and so on.
Now we need the same again, but each team plays the team |

Game | |||||||
---|---|---|---|---|---|---|---|

G | H | I | J | K | L | ||

Team | 1 | R | G | ||||

2 | R | G | |||||

3 | G | R | |||||

4 | G | R | |||||

5 | G | R | |||||

6 | G | R |

After this, we can see that team 1 has played teams 3 and 5, and so on. So team 1 has now played every team except team 4.
So we need one more group, in which each team plays the team |

Game | ||||
---|---|---|---|---|

M | N | O | ||

Team | 1 | R | ||

2 | R | |||

3 | R | |||

4 | G | |||

5 | G | |||

6 | G |

Note that for an even number of teams, this last group contains half as many games,
because 1 versus 4 is the same as 4 versus 1.
Now every team has played every other team exactly once. For Next, a bunch of tables showing round robins for specific numbers of teams. Note that in most of the following grids, the first group has been rearranged to minimise back-to-back games, where one team plays twice in a row. |

Index |