Mets, Yankees wear NYPD, FDNY hats on 9/11/2020
MLB commemorates 9/11 with ballpark ceremonies
Mets Yankees first responder caps September 11
NY Mets' Pete Alonso customizes teammates' cleats to honor 9/11 victims
Mike Piazza recalls first Mets game in NYC after 9/11
Yankees, Angels remember Sept. 11 before game
Talkin' Yanks - The Yankees are wearing NYPD and NYFD hats today on the 21st anniversary of 9/11
Remembering the victims as New York, nation mark 21 years since the 9/11 attacks
Former Mets manager Bobby Valentine tweaks Yankees over post-9/11 actions – New York Daily News
Mets, Yankees, MLB to Mark 9/11 20th Anniversary with On-Uniform Tributes – SportsLogos.Net News