I assume OP meant what sports I would prefer for betting of there was no football. I guess I would go with any sport which has more events than other. I will explain what I mean: for example we dont have lots of ice hockey games during summer. Bookmakers dont add lots of ice hockey leagues in their betting list. Same goes with tennis for example. But we have lots of basketball games all the time. We have NBA, Eurobasket, FIBA. I think I would go with basketball, because whenever I am in mood to place a bet, I will always find live or basketball game for betting that will happen nearest week.