Videos Video: Mets Retire Mike Piazza’s Number July 31, 2016 Mark Berman 0 Comments Eight years after they should have done it, the Mets finally retired Mike Piazza’s 31 on Saturday. Here is the on-field ceremony: Your browser does not support iframes. You may also like ... Video: Yoenis Cespedes Hits 2 Homers in Mets WinVideo: Mike Piazza Mets Hall of FameVideo: Daniel Murphy Talks Citi Field ReturnVideo: Mets Thanks Fans for Sticking Through 2014