Mariano Rivera - Wikipedia

Dellin Betances - Wikipedia

File:Mariano Rivera pitching closeup July 2007.jpg - Wikimedia Commons

File:Mariano Rivera 2019 Baseball Hall of Fame inductee display case.jpg - Wikimedia Commons

File:Mariano Rivera pitching in Baltimore 4-24-11 2.jpeg - Wikimedia Commons

File:Mariano Rivera jogging.jpg - Wikipedia

Mariano Rivera, Biography, Stats, & Facts

Mariano Rivera – Society for American Baseball Research

Todd Helton, A Better Baseball Player Than Mariano Rivera, Heads Toward Retirement Quietly

Adjusted ERA+: Pitcher, Baseball, Earned run average, Ballpark, Pedro Martínez, Bob Gibson, Mariano Rivera, Lefty Grove, Walter Johnson : Miller, Frederic P., Vandome, Agnes F., McBrewster, John: : Libros

File:Mariano Rivera Receives the Medal of Freedom (48749187533).jpg - Wikipedia

Mariano Rivera, Biography, Stats, & Facts

File:Mariano Rivera 2009.jpg - Wikipedia

File:Mariano Rivera pre-game in Baltimore 5-8-09 4.jpeg - Wikimedia Commons

File:Mariano Rivera pitching in Baltimore 8-22-08 3.jpeg - Wikimedia Commons