Polanco is out of the lineup for Sunday's game against the Rangers.
Polanco will be joined on the bench by Josh Rojas, Luke Raley and Cal Raleigh as the Mariners give some regulars a breather in a day game after a night game. Dylan Moore will check in at second base in place of Polanco, who has gone just 5-for-40 (.125 average) at the plate thus far in September.