Washington Nationals third baseman Ryan Zimmerman celebrates his walk-off home run against the New York Mets with first base coach Tony Tarasco. (Associated Press photo)
Washington Nationals shortstop reacts after striking out in the third inning of the Nationals' 11-0 loss to the New York Mets. (Associated Press photo)
Washington Nationals outfielder Bryce Harper celebrates his first career walk-off home run, which gave the Nationals a 9-7 win over the Pirates on Thursday. (Associated Press photo)
Washington Nationals manager Davey Johnson argues with home plate umpire Mike Winters as Winters ejects him from Thursday's game against the Pirates. (Associated Press photo)
Washington Nationals manager Davey Johnson walks off the field after a blown call ended his team's comeback and sealed a 4-2 loss to the Pittsburgh Pirates. (Associated Press photo)
The Washington Nationals' new hitting coach, Rick Schu, left, gestures during batting practice before the Nationals' baseball game against the Pittsburgh Pirates, Tuesday, July 23, 2013, in Washington. (AP Photo/Nick Wass)
Washington Nationals new hitting coach Rick Schu talks with media members before a baseball game against the Pittsburgh Pirates, Tuesday, July 23, 2013, in Washington. (AP Photo/Nick Wass)
Washington Nationals new hitting coach Rick Schu, right, watches batting practice next to Davey Johnson, left, before a baseball game against the Pittsburgh Pirates, Tuesday, July 23, 2013, in Washington. (AP Photo/Nick Wass)
Washington Nationals new hitting coach Rick Schu talks with media members before a baseball game against the Pittsburgh Pirates, Tuesday, July 23, 2013, in Washington. (AP Photo/Nick Wass)