Washington Nationals' Adam LaRoche (25)warms up in the on deck circle during a baseball game against the Pittsburgh Pirates in Pittsburgh Sunday, May 5, 2013. The Nationals won 6-2. (AP Photo/Gene J. Puskar)

Photo by: Gene J. Puskar

Washington Nationals' Adam LaRoche (25)warms up in the on deck circle during a baseball game against the Pittsburgh Pirates in Pittsburgh Sunday, May 5, 2013. The Nationals won 6-2. (AP Photo/Gene J. Puskar)