Narvaez left Friday's game against the Dodgers due to left hamstring tightness, Tom Haudricourt of the Milwaukee Journal Sentinel reports.
Narvaez suffered the injury while running out a single in the bottom of the sixth inning, and he was immediately removed from the game after reaching first base. Prior to his departure, he went 1-for-3 with a strikeout. It's not yet clear whether Narvaez will be forced to miss additional time.