Washington Nationals left fielder Bryce Harper wears a brace on his left knee, during an television interview before a baseball game against the Colorado Rockies at Nationals Park, Thursday, June 20, 2013, in Washington. Harper has been cleared to walk and jog without a knee brace and may resume baseball activities within the next few days according to general manager Mike Rizzo. (AP Photo/Alex Brandon)

Photo by: Alex Brandon

Washington Nationals left fielder Bryce Harper wears a brace on his left knee, during an television interview before a baseball game against the Colorado Rockies at Nationals Park, Thursday, June 20, 2013, in Washington. Harper has been cleared to walk and jog without a knee brace and may resume baseball activities within the next few days according to general manager Mike Rizzo. (AP Photo/Alex Brandon)