Ryan Zimmerman hurt his left side diving for a ball at first base Friday and left the game, adding yet another name to the Nats' long list of injuries.
Tyler Clippard, who was traded from the Nationals to the Athletics this winter, has earned the closer job in Oakland.
Bryce Harper returns after missing two days with a stomach virus as the Nationals face the Cardinals. Get live updates from Viera on Nats Insider!
Kila Ka'aihue was among six players cut from big-league camp Friday as the Nationals' roster begins to take shape.
According to Forbes, the Nats made a significant jump in franchise value over the last year.