Round Robin Tournament Scheduling

Softball League 9 teams but only 3 fields

Eman · 3 · 3111

Eman

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on: October 14, 2022, 10:54:33 PM
I'm commissioner of a softball league that will have 9 teams this year but only 3 fields. We are playing double headers so will have 6 games a day and trying to figure out a double round robin where every team plays at least one game each week. Any help would be appreciated.


Ian Wakeling

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Reply #1 on: October 15, 2022, 04:12:20 AM
Will this schedule work?  The teams are the letters A to I, and the schedule has 12 weeks separated by the dashed lines.

 F1    F2    F3
(E H) (B D) (C F)
(A D) (E I) (F G)
------------------
(C H) (B E) (A I)
(D F) (B C) (G I)
------------------
(D E) (F I) (A B)
(G H) (C I) (A E)
------------------
(B F) (C G) (D I)
(E F) (D G) (A H)
------------------
(C E) (A F) (B H)
(H I) (A G) (C D)
------------------
(B I) (D H) (E G)
(B G) (F H) (A C)
------------------
(F G) (D I) (B C)
(B H) (A G) (C E)
------------------
(A I) (B E) (G H)
(C D) (A B) (F I)
------------------
(G I) (E H) (B D)
(A H) (C F) (D E)
------------------
(A D) (C H) (B F)
(E G) (C I) (D H)
------------------
(A C) (D G) (E F)
(B I) (F H) (A E)
------------------
(C G) (A F) (H I)
(D F) (E I) (B G)

The first 6 weeks, and last 6 weeks, should be a single round robins.  Hope that helps.


Eman

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Reply #2 on: October 15, 2022, 12:30:10 PM
Ran through it. Works great, thanks for the help!!