The A's have added a huge injection of both quality and depth into their rotation, but it does come at a cost -- their last two first-round picks, both excellent prospects right now, who will boost a Cubs system that was already among the top five in baseball. In a significant deal, both sides add impact, with different timelines in mind.

Jeff Samardzija has gone from DFA candidate after 2011 to mid-rotation starter in 2012. Now, he's throwing