Washington Nationals manager Davey Johnson, right, and Houston Astros manager Bo Porter, left, watch batting practice before an exhibition spring training baseball game Tuesday, March 5, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

Photo by: David J. Phillip

Washington Nationals manager Davey Johnson, right, and Houston Astros manager Bo Porter, left, watch batting practice before an exhibition spring training baseball game Tuesday, March 5, 2013, in Viera, Fla. (AP Photo/David J. Phillip)