Zimmermann blanks the Reds for Nationals' second straight win.
Though the Nationals want their top prospect playing every day, Anthony Rendon has been forced to take a seat on the bench the last two nights.
Pitching is the highlight at all four levels of the Nationals' minor league system this week, but Jeff Kobernus is knocking on the door at Syracuse.
Espinosa broke out of his season-long slump in a big way with a home run and three RBI on his 26th birthday.
Everything that was going wrong for the Nats in their recent skid all of a sudden went right as Washington cruised to an 8-1 victory over the Reds.