Marte is out of the lineup Sunday against the Athletics, Ryan Divish of the Seattle Times reports.
Marte returned from mononucleosis last Tuesday and had started at shortstop in each of his first four games back, going 1-for-15 with a pair of walks and runs scored. In an effort to ease Marte back in a little bit, Mariners manager Scott Servais will rest his young shortstop during Sunday's matinee, enabling Shawn O'Malley to pick up a start at the position.