The Mariners designated Zavala for assignment Friday.
Just three days after rejoining the active roster Tuesday, Zavala will once again lose his spot on the Mariners' active and 40-man rosters. The 31-year-old backstop never appeared in a game during his latest stint in the majors, and he'll most likely pass through waivers unclaimed after posting a .660 OPS through 120 Triple-A plate appearances.