Roark pitched three-hit ball for eight innings, struck out a career-high 11 and walked none, and Anthony Rendon hit a two-run homer Friday night to lead the Nationals to a 6-0 victory against the Padres.
In two starts against the Padres this season, he has allowed only six hits in 17 scoreless innings, struck out 19 and walked one.
"Everything felt good coming out of my hand," he said. "That's a plus."
Roark (4-4) beat the Padres 4-0 at Washington on April 26th, throwing a three-hitter for his first career shutout. He struck out eight that game, his previous career high.
Roark said the key was throwing first-pitch strikes.
"That really gets a hitter on his heels and gives you confidence," he said. "I don't try to strike guys out. I just try to make quality pitches. Strikeouts happen. Today everything was working."
Said manager Matt Williams: "He's just been pitching like that for us all year. He just continues to pound the zone, all of his pitches. Pretty impressive."
The Nationals won their fourth straight and for the sixth time in seven games.
"Same thing he showed over in Washington," Padres manager Bud Black said of Roark. "Mixed his pitches, changed his speeds, commanded his fastball a little bit different than in his start in Washington. In Washington, he used his curveballs, more changeups."
"You have to keep going through it," Black said. "You have to keep your nose to the grindstone and keep working. There is no magic formula to this. You keep working, you keep busting your butt in the cage, you keep watching video, you keep your confidence, you keep telling yourself you're going to have good at-bats, you stay together as a team, you hang in there in the hopes that it will turn."
Rendon, the third baseman, came out after grounding out in the sixth. He was struck in the right hand trying to field Carlos Quentin's smash in the fourth inning and committed a throwing error. He committed a fielding error the next inning. Williams said X-rays were negative.
Ross was chased during a nightmarish four-run sixth inning in which he had a throwing error, wild pitch, walked two, hit a batter and allowed two hits. Ross allowed an RBI double to Wilson Ramos that bounced over the fence in right-center and then walked Ian Desmond to load the bases. Ross hit Danny Espinosa on the left knee to force in a run and Nate McClouth hit a two-run single to right to end Ross' night.
Ross allowed six runs, five earned, on five hits in 5 1/3 innings. He struck out seven and walked three.
The Padres placed 2B Jedd Gyorko on the 15-day disabled list with plantar fasciitis in his left foot, retroactive to Wednesday. Gyorko has struggled after signing a $35 million, six-year contract extension in April. He's hitting just .162. Manager Bud Black says Gyorko had an anti-inflammatory shot, will use a walking boot and will wear a strap when he sleeps to keep the arch stretched out. ... LHP Eric Stults was activated from the bereavement list. He's scheduled to start Sunday. ... The Padres will make two more roster moves Saturday, when RHP Andrew Cashner (2-5, 2.35) is due to be activated from the disabled list and start against the Nationals. He's been out with a sore elbow. ... The Nationals will counter Saturday night with Blake Treinen (0-2, 1.40).