If the left field experiment fails, the Mets will be forced to trade Duda to a team in need of a first baseman.At this point, the Mets look as if they will commit to current first baseman Ike Davis long-term, and he is the proper approach.If Duda indeed becomes expendable this summer, the Mets should trade him to a team such as the Oakland A's, Texas Rangers or Tampa Bay Rays that could use an up