Robles is out of the lineup for Saturday's game against Boston.
Though he'll be on the bench Saturday, Robles had started in each of the Mariners' last six games and looks like the top choice to make starts in left field while Randy Arozarena (hamstring) is shelved. While Robles rests, the Mariners will go with Connor Joe, Julio Rodriguez and Rob Refsnyder as their starting outfield trio from left to right.