The center fielder made a diving catch against the wall in left-center and exited in the bottom of the inning.
The right-handed starter was hit in his throwing shoulder in his last start on Saturday and still has a bruise.
The veteran National isn't starting Tuesday after two days off because his hamstring felt sore following Saturday's game.
The Nationals will try to extend their dominance over the Mets behind Tanner Roark.
Ryan Zimmerman remains out of the Nationals lineup despite working out before the game.
Clayton Kershaw is likely the favorite for the NL MVP award but Rendon has been the best player on the NL's best team.
Reliever Rafael Soriano got his first save chance since he was removed from the closer's role and gave up a run.
Looking at benchmarks several Nationals players can reach with a week left in the season.
The Nationals aren't about to announce their playoff rotation, but Stephen Strasburg has made clear who will pitch Game 1.
Since his return from Class AAA Syracuse, the rookie right-hander hasn't allowed an earned run in eight outings.