Munoz (elbow) threw off a mound Saturday.
Munoz had his rehab process from Tommy John surgery paused in March because of a setback. The right-hander appears to have made substantial progress since, however, as he's reached the important milestone of throwing a bullpen session. It's still not entirely clear if Munoz could become an option to join the Mariners' bullpen during the season's final months, but that will likely depend on how he progresses in the coming weeks.