"Curveball felt good. Just keep the hitter guessing," Roark said.
Harper's 2 RBIs help Nats beat Diamondbacks 4-3 →
"I felt focused and relaxed," said Roark, who was 0-4 in five starts since winning on June 4 at Oakland. "I could go out and pitch with confidence and go right at them and attack the hitters."
Murphy's 2 homers lead Nationals to 14-4 rout of Reds →