Ryan Zimmerman expected to return tonight in San Diego after resting his inflamed right shoulder for three days, but Zimmerman remains out of the lineup as the Nationals begin their six-game West Coast swing. Zimmerman had been adamant both Saturday and Sunday that the injury was not major and he would return tonight.

 Instead, rookie Stephen Lombardozzi will start at third base and Mark DeRosa, who is 3 for 30 this season, will bat third in Zimmerman’s place.

 We’ll hear more from Zimmerman later. The Nationals’ lineup is after the jump:

1. Ian Desmond, SS

2. Danny Espinosa, 2B

3. Mark DeRosa, RF

4. Jayson Werth, CF

5. Adam LaRoche, 1B

6. Xavier Nady, LF

7.Wilson Ramos, C

8. Stephen Lombardozzi, 3B

9. Gio Gonzalez, SP