I am running an event for 20 players where every player plays with another once and against them twice over 19 rounds. I had a book with that rotation but lost it and I can't find anything online. I did find one euchre rotation for 20 over 19 rounds where each player plays with another once but it doesn't mix opponents well and players end up playing against some 4-5 times and not against others at all.
Please help!