Every uniform number ever, ranked by value
Mets to retire Mike Piazza's No. 31 jersey this season – New York Daily News
Mets Retiring Darryl Strawberry, Dwight Gooden's Numbers - Metsmerized Online
Mike Piazza hits his 400th career home run
JAN. 25 MLB: New York Mets to retire Mike Piazza's uniform number
1999: Prove it - Amazin' Avenue
Mike Piazza and feeling like a teenager again
Mets to retire Mike Piazza's No. 31 jersey this season – New York Daily News
Mike Piazza Memorabilia, Autographed Mike Piazza Collectibles
Mets to retire Mike Piazza's No. 31 jersey this season – New York Daily News
Mets to retire Mike Piazza's No. 31 jersey this season – New York Daily News
It's great that the Mets are retiring Mike Piazza's number, but Gary Carter and Keith Hernandez deserve same honor – New York Daily News
Mets to Retire Mike Piazza's Number - WSJ
Mets to retire Mike Piazza's No. 31 jersey this season – New York Daily News