Sources: Mariners complete blockbuster with Mets By | December 1, 2018 [Empty Body] More from MLB.com Mariners exploring infield trade market Andrew Knizner signs deal with Mariners Mariners Sign Catcher Andrew Knizner to 1-Year Major League Contract Breaking down Jorge Polanco signing with Mets, departing Mariners Jerry Dipoto, Mariners wrap up 2025 Winter Meetings