The need to activate Triple-A Tacoma outfielder Boog Powell from the restricted list Wednesday prompted the Mariners to make a series of corresponding roster moves.
The Mariners cleared space on their 40-man roster by removing reliever Casey Fien, who was sent to Tacoma on an outright assignment after clearing waivers.
To replace Fien on the 25-man active roster, the Mariners recalled right-handed reliever Evan Marshall from Tacoma. Marshall, 26, made one appearance for the Rainiers after being acquired April 4 from Arizona in a waiver claim.
The Mariners needed to act Wednesday regarding Powell, who completed an 80-game suspension Tuesday imposed last June for failing a drug test.