Uncertainty will be the theme Saturday as the Mets and Dodgers continue a four-game series at Citi Field. For Los Angeles, the ambiguity comes in the form of its starting pitcher. The club hasn't announced who will take the hill, only that it will not be Zack Greinke, who is on the paternity list. Manager Don Mattingly indicated that Greinke will pitch Sunday, narrowing the list of candidates for Saturday to one likely pitcher: righty Zach Lee. Matt Harvey will take the mound for the Mets.