yeah youre right, we played it last year irl, not this year (awful format, awful organization), but it would be needed for the game to recognize your derby or "clasico" to set this up, and it would be harder as the save goes on and the league keeps changing teams, or for example if river and boca are in the same zone (which happens) it would be impossible as the game has to be interzonal. So with all this my suggestion is playing the team on your same position on the other zone after game 13? not sure if thats doable, and it isnt too faithful with the real format, but i think its the best way other than just removing the game 14 at all, cause now it feels a bit odd to just play a random team in your own zone twice, specially when you got River and the team youre fighting for the title with gets some random at the bottom of the table.