FILE - In this Sept. 22, 2010, file photo, Washington Nationals' Adam Dunn hits a single during a baseball game against the Houston Astros in Washington. Dunn has agreed to join the Chicago White Sox for a four-year, $56 million contract, a person familiar with the negotiations told The Associated Press on Thursday, Dec. 2, 2010. (AP Photo/Evan Vucci, File)

Photo by: Evan Vucci

FILE - In this Sept. 22, 2010, file photo, Washington Nationals' Adam Dunn hits a single during a baseball game against the Houston Astros in Washington. Dunn has agreed to join the Chicago White Sox for a four-year, $56 million contract, a person familiar with the negotiations told The Associated Press on Thursday, Dec. 2, 2010. (AP Photo/Evan Vucci, File)