Houston Astros right fielder George Springer can't catch a hit by Washington Nationals' Ian Desmond in the first inning of a spring exhibition baseball game, Friday, March 7, 2014, in Viera, Fla. (AP Photo/Alex Brandon)
Washington Nationals pitcher Tanner Roark throws in the first inning of a spring exhibition baseball game against the Houston Astros, Friday, March 7, 2014, in Viera, Fla. (AP Photo/Alex Brandon)
Washington Nationals' Bryce Harper, left, watches his two-run homer with home plate umpire Paul Nauert in the first inning of a spring exhibition baseball game against the Houston Astros, Friday, March 7, 2014, in Viera, Fla. (AP Photo/Alex Brandon)
Washington Nationals' Bryce Harper, left, watches his two-run homer with home plate umpire Paul Nauert in the first inning of a spring exhibition baseball game against the Houston Astros, Friday, March 7, 2014, in Viera, Fla. (AP Photo/Alex Brandon)
Houston Astros' Leo Heras (82) is out a second as Washington Nationals shortstop Zach Walters throws to first base to complete the double play in the ninth inning of a spring exhibition baseball game on Friday, March 7, 2014, in Viera, Fla. The Nationals won 8-5. (AP Photo/Alex Brandon)