Mets to Retire Mike Piazza's Number - WSJ
New Hall of Famer Mike Piazza tips cap to Mets, New York – New
NY Mets Retire Mike Piazza's Number 31 - Mets History
Mets to retire Mike Piazza's No. 31 jersey this season – New York
Mets Retire Mike Piazza's Number With Uplifting Ceremony
Keith Hernandez Caught Off Guard By Jersey Retirement, Reveals
Mets retire Keith Hernandez's No. 17 in Citi Field ceremony
It's great that the Mets are retiring Mike Piazza's number, but
Bruce's Journal: Mets Retire Mike Piazza's #31 in a Citifield Ceremony