"With a little time off and not moving around all the time, it got pretty stiff. He has a nice little ball on there," manager Matt Williams said. "We decided it was best to [treat the injury] right away in case we have to use him tomorrow."
Lobaton admitted he has tightness in the shin, "but it's nothing bad."
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.