Despite perfect outing, Zimm still looking to improve

VIERA, Fla. -- Nationals right-hander Jordan Zimmermann was in midseason form Tuesday afternoon in a 3-2 victory over the Yankees at Space Coast Stadium. Zimmerman pitched four perfect innings and struck out four batters.

However, Zimmermann was not satisfied with his outing even though he was working fast and changing speeds. He said he didn't get ahead of the hitters like he wanted. In fact, he was surprised that Jacoby Ellsbury and Brett Gardner didn't swing at sliders he threw.

"I was behind in the count," Zimmermann said. "I wasn't able to throw first-pitch strikes too often. I have [to pitch ahead] during the year, too. I guess it's good to get some work in."

Manager Matt Williams said that Zimmermann is being considered as the Opening Day starter against the Mets on March 31 at Citi Field. Stephen Strasburg is another likely candidate. Williams most likely will not make the decision until after the off-day on March 18.

"[Zimmermann] won a bunch of games [last season] -- 19 of them, I think," Williams said.