Keith Zimmerman, father of former Washington Nationals baseball player Ryan Zimmerman, holds up Ryan's jersey at a jersey retirement ceremony before a baseball game between the Nationals and the Philadelphia Phillies, Saturday

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Ryan Zimmerman made MLB debut 15 years ago today - Federal Baseball

Ryan Zimmerman Celebrates Jersey Number Retirement With Nats on Saturday - Sports Illustrated Virginia Cavaliers News, Analysis and More

The Beta Theta Pi - Winter 1987 by Beta Theta Pi - Issuu

Ryan Zimmerman retirement: Longtime National calls it a career after 16 seasons - Sports Illustrated

Keith Zimmerman, father of former Washington Nationals baseball player Ryan Zimmerman, holds up Ryan's jersey at a jersey retirement ceremony before a baseball game between the Nationals and the Philadelphia Phillies, Saturday

From the very beginning': Nationals retire Zimmerman's 11

RYAN ZIMMERMAN WASHINGTON NATIONALS NEW MLB MAJESTIC OFFICIAL KIDS JERSEY

Ryan Zimmerman hits 11th career walk-off home run; Nationals beat Phillies, 8-7 - Federal Baseball

Nationals retire Ryan Zimmerman's number

Nationals retire Ryan Zimmerman's number

Ryan Zimmerman retires

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August 19, 2011: Ryan Zimmerman's walk-off grand slam beats Phillies – Society for American Baseball Research