Zimmerman got hurt diving back to the bag as he was picked off second base in the fifth inning Saturday night. He stayed on the ground for a minute before finally leaving the field.
Following Zimmerman's exit, Anthony Rendon moved from second base to third and Danny Espinosa entered the game at second base.
Before the game, the Nationals placed center fielder Denard Span on the seven-day disabled list with a concussion. Right fielder Jayson Werth was held out after leaving Friday night's game with cramping in his groin. Werth had a pinch-hit single.