Ryan Zimmerman's 11 career walk-off home runs, ranked - The Washington Post
June 18, 2006: The first appearance of Mr. Walk-Off
Ryan Zimmerman hits 11th career walk-off home run; Nationals beat Phillies, 8-7 - Federal Baseball
Relive Ryan Zimmerman's 11 career walk-off home runs
FBB Roundtable: Most memorable Ryan Zimmerman moments for the Washington Nationals - Federal Baseball
July 31, 2010: Twice in a month: 'Mr. Walk-Off' Ryan Zimmerman sends Nationals fans home happy – Society for American Baseball Research
Ryan Zimmerman: Still Mr. Walkoff after all these years, by Nationals Communications
Reliving Ryan Zimmerman's 11th and final walk-off homer
Mr. Walk-Off' Ryan Zimmerman closing in on history - WTOP News
Relive Ryan Zimmerman's 11 career walk-off home runs