darkado wrote: when i go to any team page challenge is grayed out. is it supposed to be that way?

Unfortunately those teams that should have games today have games now on Wednesday. The whole system works under the assumption that games are on Mondays. And since the system allows you to challenge only for one game in advance you can't do it at the moment. After the Wednesday games teams that have games on that date will be able to challenge or be challenged again.