The Orioles blasted Roark and relievers Ross Detwiler and Craig Stammen for five runs on 10 hits in the seventh and eighth innings alone, to give the Orioles a 7-3 win.
Reports indicate the Pirates will send reigning MVP Andrew McCutchen to the 15-day disabled list, which could change the NL playoff race.
Gio Gonzalez sat down with Mark Zuckerman to discuss his health and the Nationals rotation.
Nationals minor leaguer Michael A. Taylor has been promoted from Double-A Harrisburg to Triple-A Syracuse
The Nationals placed Nate McLouth on the 15-day DL with shoulder inflammation and called up Steven Souza, Jr. on Monday.