Mayo was designated for waivers by the Blue Jackets on Wednesday.
Mayo has played on only two occasions over his 21 games on the NHL roster, recording one assist, four shots and one block while averaging a mere 8:34 of ice time. Assuming the blueliner clears waivers, he will likely spend the bulk of the rest of the year in the minors, especially after the Blue Jackets added Egor Zamula as an unrestricted free agent.