Washington Nationals' Corey Brown (10) is congratulated by teammates after he and Ian Desmond scored on a single by Tyler Moore during the ninth inning of a baseball game against the Miami Marlins, Saturday, Sept. 7, 2013, in Miami. The Nationals defeated the Marlins 9-2. (AP Photo/Wilfredo Lee)
Washington Nationals manager Matt Williams answers questions from reporters during a media availability at baseball's winter meetings in Lake Buena Vista, Fla., Tuesday, Dec. 10, 2013.(AP Photo/Phelan M. Ebenhack)
Washington Nationals manager Matt Williams answers questions from reporters during a media availability at the baseball's winter meetings in Lake Buena Vista, Fla., Tuesday, Dec. 10, 2013.(AP Photo/Phelan M. Ebenhack)
Washington Nationals pitcher Stephen Strasburg, right, hugs Gio Gonzalez after Gonzalez pitched a one-hitter as the Nationals defeated the New York Mets, 9-0, in a baseball game Monday, Sept. 9, 2013, in New York. (AP Photo/Bill Kostroun)
Members of the grounds crew squeegee water off the infield tarp during a rain delay before a baseball game between the Washington Nationals and Arizona Diamondbacks at Nationals Park, Thursday, June 27, 2013, in Washington.(AP Photo/Pablo Martinez Monsivais)
Washington Nationals relief pitcher Fernando Abad (58) throws during a baseball game against the New York Mets at Nationals Park Friday, Aug. 30, 2013, in Washington. The Mets won 3-2. (AP Photo/Alex Brandon)
Washington Nationals general manager Mike Rizzo, left, shakes hands with Matt Williams, as Williams is introduced as the new manager of the baseball team, during a news conference at Nationals Park, Friday, Nov. 1, 2013, in Washington. (AP Photo/Alex Brandon)