UPDATE AT 7:33 P.M: Nationals general manager Mike Rizzo met with reporters a few minutes ago, and said Strasburg's scratch was a "precautionary move" after the right-hander had trouble getting loose in the bullpen before the game. Pitching coach Steve McCatty and trainer Lee Kuntz alerted Rizzo, who made the decision to pull the plug on Strasburg.
"We're erring on the side of caution," Rizzo said. "I just didn't want him to go out there when he was struggling to get loose in the bullpen pregame."
Rizzo said Strasburg had no symptoms of arm trouble earlier in the week; he had a clean bullpen session, Rizzo said, and was fine playing catch yesterday. He said Strasburg didn't mention anything about pain, and wanted to pitch, but Rizzo obviously wasn't going to allow it.
"Those are decisions I get paid to make," Rizzo said. "We're going to err on the side of caution. I'll make the decisions and take the heat for it."
Strasburg will be seen by team doctor Wiemi Douoguih, and Rizzo said he'd imagine the team will do an MRI and X-ray on Strasburg's arm. His next start would be scheduled for Sunday against the Phillies.
"He's day-to-day, and we'll see how responds tomorrow," Rizzo said.
Brace yourselves, NatsTown: Stephen Strasburg has been scratched from tonight's start. That's all I know right now, but I'll have more as soon as I get it.
Miguel Batista will start for the Nationals.