PROGRAMMING NOTE: Nationals-Giants coverage begins at 6pm with Pregame Live on NBC Sports Bay Area and streaming right here.
Brought to San Francisco on Monday, Orlando Calixte was activated on Tuesday and is in the lineup against the Nationals.
To make room for Calixte on the active roster, outfielder Mac Williamson has been optioned to Triple-A Sacramento.
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Washington Nationals:
1. Trea Turner (R) SS
2. Jayson Werth (R) LF
3. Bryce Harper (L) RF
4. Ryan Zimmerman (R) 1B
5. Daniel Murphy (L) 2B
6. Anthony Rendon (R) 3B
7. Matt Wieters (S) C
8. Michael Taylor (R) CF
9. Gio Gonzalez (R) P
San Francisco Giants:
1. Orlando Calixte (R) LF
2. Eduardo Nunez (R) 3B
3. Brandon Belt (L) 1B
4. Buster Posey (R) C
5. Justin Ruggiano (R) RF
6. Aaron Hill (R) 2B
7. Christian Arroyo (R) SS
8. Gorkys Hernandez (R) CF
9. Jeff Samardzija (R) P