Washington Nationals left fielder Bryce Harper (34) before the start of a baseball game against the Miami Marlins at Nationals Park in Washington, Sunday, Sept. 22, 2013. (AP Photo/Susan Walsh)
Washington Nationals manager Davey Johnson salutes the crowd at Nationals Park after his final regular-season home game as the team's manager. (Associated Press photo)
Washington Nationals outfielder Bryce Harper is greeted by his teammates after hitting his 20th home run of the season, a three-run shot in the Nationals' 3-2 win over the Marlins. (Associated Press photo)
Washington Nationals center fielder Denard Span leaps to try and corral a ball in the Nationals' 5-2 loss to the Atlanta Braves on Wednesday night. (Associated Press photo)
Washington Nationals right-hander Tanner Roark tossed seven scoreless innings to lead the Nationals over the Braves in the nightcap of a doubleheader sweep. (Associated Press photo)