However, Zimmerman was able to jog and take batting practice prior to the game without feeling any discomfort in the hamstring. The next step for Zimmerman is to run the bases, which he hasn't done yet.
While he was available to pinch-hit in Sunday's game against the Dodgers, the Nationals were hoping he could start in the series against the Cubs in Chicago, which starts Monday at Wrigley Field.
There isn't any talk about putting Zimmerman on the disabled list, according to manager Jim Riggleman.
"I'll see how it feels [Monday]," Zimmerman said. "It's looking better and better each day. Like I said about the [first hamstring injury], you have to be sure that you are ready to go."