NY Mets to wear first responder caps during a game on 9/11
NY Mets' Pete Alonso customizes teammates' cleats to honor 9/11 victims
Yankees honor 9/11 with hats, 09/11/2020
This Day in Braves History: Baseball returns after 9/11 Tragedy - Battery Power
Heartbreak and hope: Members of 2001 Mets reflect on their role in helping NYC recover from 9/11
Mets, Yankees, MLB to Mark 9/11 20th Anniversary with On-Uniform Tributes – SportsLogos.Net News
Pete Alonso on Mets wearing first-responder hats: 'I'm really, really happy about it' - Newsday
MLB Network special remembers baseball's NYC return after 9/11
Mets, Yankees to wear first responder caps for 9/11 remembrance game vs. Yankees