Jim Henneman: Mariano Rivera's Deserving But A Relief Pitcher Is First Unanimous HOF Selection? - PressBox
Mariano Rivera elected to baseball Hall of Fame, first unanimous pick
Posnanski: How the lack of Hall of Fame unanimity became A Thing, and why it should end with Mariano Rivera - The Athletic
Yankees Mariano Rivera Voted Unanimously to Baseball Hall of Fame - Bloomberg
Mariano Rivera to enter Baseball Hall of Fame, Baseball News
Two Yankees Elected To Cooperstown; Mariano Rivera First Unanimous - The Runner Sports
Mariano Rivera – Society for American Baseball Research
VIDEO: Mariano Rivera's Family's Reaction to Unanimous Hall of Fame Induction
Unanimous – Farano Fine Art
Derek Jeter falls one vote short of unanimous Baseball Hall of Fame election
Mariano Rivera unanimously elected to Hall of Fame, along with Roy Halladay, Edgar Martinez and Mike Mussina – BBWAA
Closed case: Rivera first unanimous selection for baseball Hall of Fame