The Washington Times - June 12, 2012, 07:05PM

TORONTO — The Nationals got good news on the right hamstring of outfielder Roger Bernadina when he went for an MRI on Tuesday and no tear was discovered. Bernadina, who strained the hamstring Monday night sliding into third base on a wild pitch, is expected to miss only two or three days, manager Davey Johnson said.

“The trainer kind of knew that,” Johnson said. “So it’s probably going to be another two-three days and he’ll probably be all right. I don’t see any need for a recall. 

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“He’ll be back soon. I’m glad it wasn’t something serious. Just tweaked it.”

The Nationals will play two more games in an American League park and then will head home for an off-day so they will likely be able to easily get away with playing down a man given the use of the designated hitter and the lack of double switches in American League play.

– Nationals utility man Mark DeRosa will be away from the team until at least Friday as his father, Jack, unfortunately has lost his battle with cancer. 

DeRosa had been traveling back-and-forth to New Jersey often in the past few weeks as his father’s condition worsened. Being on the disabled list allowed DeRosa to leave the team often to be with his family but he had rejoined the team whenever he could and was slowly working his way back into shape after a left oblique strain.

Jack DeRosa had beaten cancer once before, DeRosa said, but it came back and came back strong this spring. Keep the DeRosa family in your thoughts this week.

– First baseman Chris Marrero and right-hander Ryan Mattheus joined Double-A Harrisburg on Tuesday to continue their respective rehab assignments. Marrero (torn hamstring) is coming along slowly, still dealing with a little soreness in the hamstring, Johnson said.