The Mariners have designated reliever Mike Morin for assignment, per a club announcement. The club also optioned out first baseman Dan Vogelbach while adding righties Nick Rumbelow and Rob Whalen to the active roster.
Morin, 27, had appeared twice this year for the M’s at the MLB level but spent most of his time in the Seattle organization at Triple-A. Over 25 total frames, he allowed nine earned runs and carried a strong 28:6 K/BB ratio.
Over parts of five seasons in the majors, Morin has worked to a 4.60 ERA over 172 innings. Claimed off waivers over the winter, he was removed from the 40-man late in camp and then added back just a few days ago. Given his prior outright, Morin can refuse an assignment to Triple-A if he clears waivers.