It's time for Roberto Clemente's No. 21 to be retired across
MLB gets it right with Roberto Clemente No. 21 jersey policy
Altoona Curve honors Pirates legend Roberto Clemente, retires No. 21
Altoona Curve to officially retire Roberto Clemente's No. 21 during ceremony Friday
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Fightins to Retire Roberto Clemente's #21
New Jersey politicians move to retire Roberto Clemente's No. 21 across all of baseball
Living out the legacy: Curve retire No. 21 as reminder of Clemente's greatness
Tampa Bay Rays honor Roberto Clemente by starting nine Latin American position players - The Boston Globe
Angels coach Jose Molina puts Roberto Clemente's number on his back – Orange County Register
Martin Maldonado, Astros honor Roberto Clemente
Outside The Confines: Everyone wore 21 - Bleed Cubbie Blue