Washington Nationals pitcher Stephen Strasburg delivers a pitch during the second inning of an exhibition spring training baseball game against the Detroit Tigers on Friday, March 22, 2013, in Viera, Fla. (AP Photo/Evan Vucci)
Washington Nationals manager Davey Johnson sits in the dugout before the start of an exhibition spring training baseball game against the Atlanta Braves on Sunday, March 24, 2013, in Viera, Fla. (AP Photo/Evan Vucci)
Washington Nationals infielder Ryan Zimmerman sits in the dugout before the start of an exhibition spring training baseball game against the Atlanta Braves on Sunday, March 24, 2013, in Viera, Fla. (AP Photo/Evan Vucci)
Washington Nationals outfielder Denard Span sits in the dugout before the start of an exhibition spring training baseball game against the Atlanta Braves on Sunday, March 24, 2013, in Viera, Fla. (AP Photo/Evan Vucci)
Washington Nationals pitcher Chris Young delivers a pitch during the first inning of a spring training baseball game against the Houston Astros on Monday, March 25, 2013, in Kissimmee, Fla. (AP Photo/Evan Vucci)
The U.S. Supreme Court building on Capitol Hill in Washington (AP Photo/Evan Vucci, File)
** FILE ** Singer Barbra Streisand arrives at the White House for a state dinner in honor of Chinese President Hu Jintao on Jan. 19, 2011. (AP Photo/Evan Vucci)
** FILE ** Republican presidential candidate, former Massachusetts Gov. Mitt Romney, right, watches the vice presidential debate with Sen. Rob Portman, R- Ohio, left, in his hotel room in Asheville, N.C. (AP Photo/ Evan Vucci)
Washington Nationals Anthony Rendon bats during the first inning of an exhibition spring training baseball game against the Houston Astros on Wednesday, March 13, 2013, in Kissimmee, Fla. (AP Photo/Evan Vucci)
