Mets, Yankees, MLB to Mark 9/11 20th Anniversary with On-Uniform

Mets-Yankees hold 9/11 ceremony honoring first responders

New York Yankees - Wikipedia

Mets, Yankees Will Play At Citi Field September 11, 2021 To Commemorate 20th Anniversary Of 9/11 Attacks - CBS New York

Mets will wear special uniforms to mark 9/11 anniversary

Sept. 11 Attack 20th Anniversary: Live Updates: With Bowed Heads, Americans Reflect on 9/11 and Its Aftermath - The New York Times

Mets, Yankees come together to commemorate 9/11 anniversary - Newsday

Mets Morning News: Polar Bear Power - Amazin' Avenue

Mets, Yankees, MLB to Mark 9/11 20th Anniversary with On-Uniform Tributes – SportsLogos.Net News

Mets, Yankees offer emotional tributes 20 years after 9/11 in Subway Series