If doing fantasy baseball for a whole season seems too much like a long-haul, FanDuel might offer a better alternative.
Yes, to address the elephant in the room first: yes, I know that. according to their rules, if you are "physically located" in Arizona, state law means that you can not deposit or win "real money". Unfortunately, there isn't anything we can do about the archaic laws in force here. So, if you're an Arizona resident [or in Hawaii, Iowa, Louisiana, Mississippi, Montana, Nevada, New York, or Washington], please feel free to get on with your day, and enjoy the rest of the SnakePit.