Even with Zack Greinke and Anibal Sanchez still up for grabs, the National League already seems set to sport some excellent rotations in 2013. How about this for the top four: Nationals: Stephen Strasburg, Gio Gonzalez, Jordan Zimmermann, Dan Haren, Ross Detwiler Giants: Matt Cain, Madison Bumgarner, Tim Lincecum, Ryan Vogelsong, Barry Zito Phillies: Roy...