The Mariners demoted Pereda to Triple-A Tacoma on Tuesday.
Pereda will head back down to Triple-A Tacoma in direct response to Cal Raleigh being activated off of the 10-day injured list. Pereda slashed .270/.324/.365 with two homers and four RBI in 63 plate appearances with Seattle this season. The Mariners will now carry Cal Raleigh and Mitch Garver as backstops.