Tanner Roark. (AP Photo/David Goldman)

Tanner Roark takes the mound after his worst major league start, allowing five runs in 4 2/3 innings. He is opposed by Jose Fernandez. The Nationals have a tough stretch of opposing pitching match-ups in the next few days. After Fernandez, they fly back to Washington, arrive around 2 a.m. and then face Adam Wainwright on Thursday night. Then, they face Michael Wacha on Friday and Lance Lynn on Saturday. The lineups are here. As always, discuss the game here.