With two final cuts on Wednesday, the Nationals finalized their roster of position players, which will include infielder Danny Espinosa.
The Nationals won't name their No. 5 starter until after both Tanner Roark and Taylor Jordan make one final appearance Saturday in D.C.
The Mets have chosen right-hander Dillon Gee as their Opening Day starter, manager Terry Collins announced on Tuesday.
Bryce Harper was ejected from the Nationals' spring training game in Jupiter after arguing a close call at first base.