When new President Theo Epstein and General Manager Jed Hoyer joined the Chicago Cubs this offseason, it was very clear that the club would go through a rebuilding stage. So far, they have lived up to that. They acquired the top first base prospect in Anthony Rizzo from the San Diego Padres this winter. They shipped out disgruntled pitcher Carlos Zambrano to the Miami Marlins for Chris Volstad. They acquired young pitcher Travis Wood and others from the Cincinnati Reds for Sean Marshall. They acquired Ian Stewart from the Colorado Rockies. Needless to say, Epstein and Hoyer have been busy this ...