Gregorius is not in the lineup Tuesday against the Nationals, Bryan Hoch of MLB.com reports. Gregorius is still struggling at the plate as his average barely hovers above the Mendoza Line as he sports a slash line of .204/.269/.241. He'll take a seat Tuesday against southpaw Gio Gonzalez while Stephen Drew will slide over to shortstop and Jose Pirela will receive the starting nod at second base.