7. Washington Nationals | GM: Mike RizzoAcquired: OF Denard Span, RHPs Dan Haren, A.J. Cole, re-signed 1B Adam LaRocheAnalysis: Despite owning the best record in the major leagues last season, Rizzo did not rest. Trading for Span solves Washington’s two biggest needs -- a defensive improvement in center field and a leadoff hitter, while Haren replaces Edwin Jackson’s workload cheaply with a one-year deal. However, shrewdly convincing LaRoche to take a two-year deal was Rizzo’s best move. LaRoche maintains important left-right balance in the middle of their order.I really like what Washington did.