Growing up, the baseball mantra from my father was "wait until 40 games and then you can know how a team will play."  Perhaps this was just a way for a Cleveland fan growing up in the 80s to keep hope, or maybe there is some truth to that saying.   Small sample sizes do matter. Some players take a few weeks to get going, and all the other baseball truisms apply. Overreactions kill teams, and so too with fantasy rosters.  Still, if you have Yu Darvish and others on your roster, waiting f[...]