List of Major League Baseball retired numbers - Wikipedia
ROBERTO CLEMENTE RETIRED JERSEY NUMBER 21 PATCH LOT - PIRATES & PUERTO RICO
McCutchen 1st Hit Of MLB Season, As NL DH, With No. 21 Patch
Some MLB Players Wearing #21, All Wearing 21 Patches Today for Roberto Clemente Day – SportsLogos.Net News
Best Rangers players by uniform number
Texas Rangers on X: Incredibly proud to honor @thearn14 as our Roberto Clemente Award nominee! Vote Taylor: / X
Nats DH Cruz, other Clemente Award winners wear '21' on caps
Ranking MLB's City Connect uniforms - ESPN
Roberto Clemente: Breaking News, Rumors & Highlights
Texas Rangers on X: Incredibly proud to honor @thearn14 as our Roberto Clemente Award nominee! Vote Taylor: / X