Mike Piazza to Have No. 31 Retired by Mets: Date, Comments and
Mets Retire Mike Piazza's Number With Uplifting Ceremony - Metsmerized Online
The Mets retire Mike Piazza's Number 31 in 2016, Time Machine Tuesday
Home Run Apple Commemorates No. 31 Retirement - Mets History
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Mike Piazza: Look back at catcher's Hall of Fame career - Sports Illustrated
OTD in 2016: Mets Retire Mike Piazza's No. 31 - Metsmerized Online
Mets to retire Mike Piazza's No. 31 jersey this season – New York Daily News
Mike Piazza Collect the Mets
Home Run Apple Commemorates No. 31 Retirement - Mets History
Mets to retire pitcher Jerry Koosman's number next season
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Mets to retire Mike Piazza's No. 31 jersey this season – New York Daily News
Why would the Mets wait so long to retire Mike Piazza's No. 31? – New York Daily News