Trevor Hoffman - Wikipedia
300 save club - Wikipedia
Mariano Rivera: MLB's Greatest Closer - Pinstripes Nation
Rivera Notches Save No. 600 in Seattle - The New York Times
Rivera sets all-time saves record with 602
This Day in Yankees History: Mariano Rivera collects his 300th save - Pinstripe Alley
Mariano Rivera – Society for American Baseball Research
Baseball Hall of Fame: Mariano Rivera elected unanimously; Roy Halladay is in
Mariano Rivera Hall of Fame Moments - Cooperstown Cred
13 historic moments in Mariano Rivera's career
Mariano Rivera 600th save, Mariano Rivera recorded his 600th save on this day in 2011., By MLB
25 years ago, Mariano Rivera made the one great start -- yes, start -- of his Hall of Fame career - ESPN
One Mo Time (Rivera vs. Mariners) - ESPN - Yankees Blog- ESPN