The Mariners designated Andriese for assignment Tuesday, Curtis Crabtree of Sports Radio 950 KJR Seattle reports.
He'll cede his spot on the 40-man roster to Matt Brash, who was called up from Double-A Arkansas to serve as a piggyback option behind starter Tyler Anderson in Tuesday's game against the Athletics. Since inking a one-year deal with Seattle five weeks ago, Andriese appeared in eight games out of the bullpen, giving up six runs (three earned) while striking out 12 over 11 frames.