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06/27/08 9:39 PM ET

Hill's visit to Mayo Clinic inconclusive

Right-hander says there is no structural damage in his forearm

WASHINGTON -- Two days after going to the Mayo Clinic, Nationals right-hander Shawn Hill said he knew all along that there was nothing structurally wrong with his right arm, because the velocity on his fastball, which he throws in the low 90s, never went away.

However, Hill is trying to figure out why he is having problems with his right forearm. Muscle soreness is preventing him from throwing the sinkers.

The doctors told Hill to rest his arm and that surgery would not be required. There is no timetable as to when he will return to action.

"There wasn't really a whole lot of news," Hill said. "We have a plan. It's basically rest at this point. When I went to see the doctors at the Mayo Clinic, they haven't seen anything like it [the forearm muscles] either. They are trying to figure it out as it goes."

In other news, right fielder Austin Kearns played in his first rehab game on Thursday, going 0-for-2 with a run scored for Class A Hagerstown. The good news is that Kearns didn't experience any pain in his right elbow, which was surgically repaired last month.

Kearns is expected to go to Triple-A Columbus on Saturday, and the team hopes that he will be activated from the disabled list when it plays the Reds next weekend in Cincinnati.

Bill Ladson is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.