Except for the interstate derbies don't think there are any guaranteed double ups any more. We don't seek certainly don't play our major enemies twice in a year. It's only about when a club wants to play a certain opponent... eg Anzac Eve.Said this a week or so ago. Every team plays every other team once, then starts again in round 18. It continues on the next season. It’s random and fair. The trade off is the loss of scheduled ‘blockbusters’.