Giants' first baseman blasted the game-winner in the 18th inning
Syracuse capped a stellar regular season with a division title.
The outfielder was making only his second ever major league start when he left the game following a scary collision.
Bryce Harper played five innings for Class A Potomac in a rehab assignment on Tuesday, and he capped the outing with a long home run to right field.
The Nationals skipper was ejected for arguing balls and strikes with home plate umpire Mark Wegner.
Zimmerman took grounders at his old position on Monday in preparation for a return there when Bryce Harper comes back.
Though Stephen Strasburg was upset with his plan for Jason Heyward, Matt Williams says he can dictate his own pitches.
Outfielder Bryce Harper's rehab assignment plan is for him to play Monday and Tuesday at Class A Potomac.
Anthony Rendon was back in the Nationals lineup, but the Nationals were still using caution.
Jayson Werth is out of the Nationals' lineup for the first time since April 12.