Round Robin Tournament Scheduling

10 games, 10 rounds, ? teams

dick232323 · 14 · 7559

dick232323

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on: July 21, 2011, 11:38:24 PM
Hello,

I am trying to figure out a schedule for 6,7,8,9,10,11 and 12 teams for 10 games and 10 rounds for a backyard games tournament coming up soon.  Can somebody please help me?  Also, is there a website or excel formula I can run this myself since I won't know exactly how many teams will show up to the tournament?  Thanks a bunch


Ian Wakeling

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Reply #1 on: July 22, 2011, 07:00:56 AM
The only one I have from your list is a schedule for 12 teams which I have put in the attached file.


dick232323

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Reply #2 on: July 22, 2011, 10:56:08 AM
Thanks for the quick repsonse Ian.  I really appreciate it.  My last question I had was can you fit in the 6,7,8,9,10,11 and 12 teams for 10 games if it didnt matter how many rounds there were?  I would be okay if teams had a bye while other teams were playing and were more rounds than games.  I guess my intentions were to have everybody play 1 game each and play a team only once.  It would be okay if teams did play each other more than once, just preferrably if they just played each other once.

Thanks


dick232323

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Reply #3 on: July 22, 2011, 12:12:58 PM
Actually Ian, I found your Howell's excel spreadsheet further down in the threads.  That is perfect in what I needed.  thank you for designing that.  I see that it only goes up to 11 teams.  I got the one for 12 teams, but do you have any for 14,16 and 18 teams, whether it be 10 or 12 yard games?

Thanks


Ian Wakeling

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Reply #4 on: July 23, 2011, 03:07:22 AM
I thought I remembered posting the cyclic Howell spreadsheet before, but previously I didn't manage to locate the thread here.  I think you are reading it incorrectly, the 'up to 11' you refer to is the number of rounds or games, not the number of teams.  So the file offers no help at all for 12 yard games.  (10 6) is the design for 12 players in the pdf above, so (10 7), (10 8) & (10 9) will be of use for 14, 16 & 18 teams respectively.


dick232323

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Reply #5 on: July 24, 2011, 10:23:54 PM
My mistake Ian, you are correct, I was reading that incorrectly.  That file does still work, I was just looking at it incorrectly.  Depending on how many poeple show up I can adjust the amount of games according to spreadsheet.  

My last question is what if our yard game tournament has an odd number of teams.  How would I incorporate a bye where one team sits out that round?  Thanks again Ian.


Ian Wakeling

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Reply #6 on: July 25, 2011, 03:44:56 AM
With an odd number of teams you will not be able to give everyone the same number of games.  I think the best you can do would be to delete one team from the existing schedule, so for example if you had 11 teams, then start with the schedule above and delete team 11,  whoever was scheduled to play against team 11 is then the team who gets a bye, this also defines the one type of yard game that the bye never gets to play.  The exception here is team 10, as they are the one team who are never scheduled to play against team 11, so they will play one more game than everyone else.  You may be able to add an 11th round where 10 has a bye, but I think half of the players will have to play a yard game that they have already played.
« Last Edit: July 25, 2011, 03:48:01 AM by Ian »


dick232323

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Reply #7 on: July 26, 2011, 09:20:13 AM
ok, thanks a bunch for the info.  Everybody will be impressed on how smooth the event is going to go.  Thanks again Ian.


dick232323

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Reply #8 on: July 30, 2011, 11:59:50 AM
Hey Ian, I got to thinking of maybe throwing a twist in the back yard games weekend.  What if we decided to rotate parters where you would never have the same partners and only play each game once?  More of an individualized tournament, but still having a partner.  Is there a chart like the Cyclic Howells spreadsheet out there or is this to difficult of a formula.

Thanks


Ian Wakeling

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Reply #9 on: August 03, 2011, 03:22:35 AM
Do you mean that each game involves 4 players - 2 against 2 with different partners each round?  Unfortunately I can't think of any suitable schedules for this situation.  But may be you could start with a whist schedules that you can find using the schedules link above and, for example, try to spread the 12 players schedule over 10 tables(yard games) rather than 3.


dick232323

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Reply #10 on: August 03, 2011, 09:07:23 AM
ok. Ill try that.  Thanks Ian


horaizon

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Reply #11 on: September 19, 2011, 10:16:03 AM
Thanks Ian  8-)


jackzxcasd

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Reply #12 on: September 28, 2011, 10:52:35 PM
My last question is what if our yard game tournament has an odd number of teams.  How would I incorporate a bye where one team sits out that round?  Thanks again Ian.


Ian Wakeling

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Reply #13 on: September 30, 2011, 02:15:01 AM
The one bye team per round makes things difficult as you would need as many rounds as teams to make sure that everyone got the same number of games.  This equates to rearranging a round-robin over more than the standard (nteams-1)/2 venues.  I think I have a way of doing this, but I don't have any way of finding a schedule when you want fewer rounds than players.