In the midst of an excellent 2014 season, the New York Yankees traded catcher/first baseman Peter O'Brien. He'd been making huge progress with Double-A Trenton, putting up power and contact numbers. He made a solid jump into the Arizona Diamondbacks system, continuing his excellent pace in the Arizona Fall League. He finished 2014 hitting .271/.316/.594 between three levels, and begins 2015 ranked 8th in the Diamondbacks system by Baseball America. He's the only catcher in the top 10, with pitching and the rest of the infield dominating the list. O'Brien is a natural leader that showed quick hands and solid athleticism in his first professional season in the New York Penn League. He looked physically stronger and more polished in Double-A. At the pace he's going, he projects to develop more power and hit maybe 30+ home runs a year. But he came to catching late. He added the position in his senior year of high school. He can play third as well. Catching hasn't come naturally, so that could hold him back from playing regularly in the big leagues. He's commented in different interviews, including for this blog, about his confidence in his growth, and his need to improve throwing.