Tanner Roark. (Credit: Daniel Shirey-USA TODAY Sports)

The Nationals have alternated between scoring futility to a scoring binge over the past two games against the Padres. On Saturday, the Nationals face the Padres best starter, hard-throwing Andrew Cashner (2-2, 2.10 ERA). Tanner Roark (1-0, 3.80 ERA), who has improved of late, takes the mound for the Nationals. Roark is 3-0 with a 0.35 ERA in eight career games at Nationals Park. The lineups are here. As always, discuss the game here.