Mike Piazza's First Game in Queens: 25 Years Later - Legends On Deck
COL@NYM: Mets celebrate Piazza with number retirement
Mets Trade History: Mike Piazza comes to the Big Apple
Mike Piazza Collect the Mets
File:Mets retired 31.svg - Wikipedia
Mets Announce They Will Finally Retire Mike Piazza's Number 31
Mike Piazza, Baseball Wiki
The Mets retire Mike Piazza's Number 31 in 2016, Time Machine Tuesday
Hall of Famer Mike Piazza has his No. 31 retired by Mets - Las Vegas Sun News
Mike Piazza hopes Mets keep Pete Alonso long-term