Nationals' left-hander Ross Detwiler turned in his third strong start of the season to lead the Nationals to a 6-1 victory over the Marlins, and his 0.90 ERA ranks as the sixth-best mark in the major leagues. (Associated Press photo)

Photo by: J Pat Carter

Nationals' left-hander Ross Detwiler turned in his third strong start of the season to lead the Nationals to a 6-1 victory over the Marlins, and his 0.90 ERA ranks as the sixth-best mark in the major leagues. (Associated Press photo)