With a devoted 10K bankroll, this a virtual certainty to get a 4-5% return on your money over 6 months, no matter which team you choose. Takes 11 losses in a row to beat you at even money, and quite a bit more than that for dogs. If a team is -200 every game on average, they are unlikely to lose 7 in a row. Many teams have 11 as the longest losing streak in the history of the franchise. That being said, I don't think I'm gonna do it, because it is not a big enough risk/reward ratio for me.