Nats reliever Kimball has shoulder stiffness

LAKE BUENA VISTA, Fla. -- Nationals reliever Cole Kimball has not pitched in seven days because of stiffness in the back of his shoulder, according to manager Davey Johnson. The injury is not considered serious.

However, Kimball had a bullpen session on Wednesday without any problems. Kimball, who has pitched in seven games this spring, allowing two runs in 6 1/3 innings, has a history of shoulder problems. He missed most of the 2011 and '12 seasons because of rotator cuff surgery.

"Knowing Kimball, I wasn't there, but I'm sure he was dressed and ready to make this trip [against the Braves]," Johnson said.

Bill Ladson is a reporter for 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.