Stammen didn't give any excuses.
"I was probably a little too fresh. It is what is it is. I should have been a little bit better," Stammen said.
• Reliever J.C. Romero pitched his first game as a member of the Nationals and tossed one shutout inning and struck out one against the Astros.
Bill Ladson is a reporter for MLB.com and writes an MLBlog, All Nats All the time. He also could be found on Twitter @WashingNats. This story was not subject to the approval of Major League Baseball or its clubs.