NY Mets' Pete Alonso customizes teammates' cleats to honor 9/11
Beautiful gesture by Mets slugger Pete Alonso to honor 9/11 heroes
Mets' Pete Alonso organized custom cleats effort to commemorate 9/11
Yankees honor 9/11 heroes 20 years later
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New York Mets video: Pete Alonso officially donates custom 9/11 cleats
Mets, Yankees and more pay tribute on 9/11 20th anniversary