**FILE** Washington Nationals manager Davey Johnson, right, talks with general manager Mike Rizzo, left, prior to a Nationals baseball game against the Pittsburgh Pirates in Washington, Friday, July 1, 2011. (AP Photo/Ann Heisenfelt)
**FILE** Washington Nationals manager Davey Johnson works with Washington Nationals batting coach Rick Eckstein during batting practice before a baseball game against the Colorado Rockies at Nationals Park, Sunday, June 23, 2013, in Washington. (AP Photo/Carolyn Kaster)
Washington Nationals starting pitcher Jordan Zimmermann pauses on the mound during the second inning of a baseball game against the Los Angeles Dodgers, Sunday, July 21, 2013, in Washington. (AP Photo/Nick Wass)
Washington Nationals starting pitcher Stephen Strasburg, top, delivers against Los Angeles Dodgers' A.J. Ellis during the fourth inning of a baseball game at Nationals Park, Friday, July 19, 2013, in Washington. (AP Photo/Pablo Martinez Monsivais)
National League’s Bryce Harper, of the Washington Nationals, stretches during batting practice before the MLB All-Star baseball game, on Tuesday, July 16, 2013, in New York. (AP Photo/Matt Slocum)
**FILE** Washington Nationals pitching coach Steve McCatty, left, talks with general manager Mike Rizzo, and manager Davey Johnson during batting practice before a baseball game against the Milwaukee Brewers at Nationals Park Monday, July 1, 2013, in Washington. (AP Photo/Alex Brandon)
National League's Bryce Harper, of the Washington Nationals, hits a 471 foot, seventh home run, during the MLB All-Star baseball Home Run Derby, on Monday, July 15, 2013 in New York. (AP Photo/Kathy Willens)
Washington Nationals' Jordan Zimmermann in action during a baseball game against the Philadelphia Phillies, Thursday, July 11, 2013, in Philadelphia. (AP Photo/Matt Slocum)
Washington Nationals starter Jordan Zimmermann pitches for Wisconsin-Stevens Point during the 2007 NCAA Division III World Series (Wisconsin-Stevens Point Athletics)