By now, it's likely that you know at least one person into fantasy sports, as the Fantasy Sports Trade Association estimates that around 42 million people in the US and Canada played in at least one league last year. 

While that number grows every year, the traditional dynamics of assembling a team and competing against others for a sport's particular season is evolving just as fast. As Daily fantasy, where you pick a new team every day is all the rage, and it's starting to change the definition of what it means to be a sports fan.

Ben McGrath wrote about this in The New Yorker and he joins A Martinez for a conversation on the topic.