Houston Astros manager Bo Porter, left, talks with Washington Nationals third baseman Ryan Zimmerman, right, before an exhibition spring training baseball game Tuesday, March 5, 2013, in Viera, Fla. (AP Photo/David J. Phillip)

Photo by: David J. Phillip

Houston Astros manager Bo Porter, left, talks with Washington Nationals third baseman Ryan Zimmerman, right, before an exhibition spring training baseball game Tuesday, March 5, 2013, in Viera, Fla. (AP Photo/David J. Phillip)