The Mariners outrighted Gonzalez to Triple-A Tacoma on Monday.
Gonzalez will remain part of the Seattle organization, but he no longer possesses a spot on the 40-man roster after getting designated for assignment and clearing waivers. The 26-year-old righty has made five appearances out of the Mariners bullpen this season, logging a 4.70 ERA, 1.83 WHIP and 5:5 K:BB in 7.2 innings.