Neil Walker, Pedro Alvarez sit against Wade Miley, Diamondbacks

It's Jonathan Sanchez vs. lefty Wade Miley at 3:40. Here's the lineup.

Starling Marte LF
Jose Tabata RF
Andrew McCutchen CF
Gaby Sanchez 1B
Russell Martin C
Josh Harrison 3B
Clint Barmes SS
John McDonald 2B
Jonathan Sanchez P

Neil Walker and Pedro Alvarez get the day off, which means that the bottom of the Pirates' lineup is pretty gross-looking, but neither Walker nor Alvarez have historically been very good at hitting lefties, and neither of them have hit much at all in the first eight games of the season (for whatever that last part is worth).