Highly thought of rookies are the big unknown in fantasy. Everyone is looking for the 2012 Trout and hope that they don't get the 2011 Trout. Puig has started off as if he's going to duplicate what Trout did last year. The obvious question is - can he continue to be productive once the league has a chance to make changes in how they pitch to him, The logic for dealing Puig now is that his value will never be higher and you might be able to get a top notch player in exchange for him. That won't happen if he hits a 2-25 patch and starts striking out all the time. The stock market expression is "sell high". Personally I own him in both leagues and have no desire to trade him.