Mariano Rivera, Roy Halladay, Edgar Martinez, and Mike Mussina were elected to the Hall of Fame on Tuesday.
Rivera was named on all 425 submitted ballots – the first unanimous inductee in the game's history.
To argue that Rivera is not a first-ballot Hall of Famer is delusional – he is 5th all-time in Win Probability Added (WPA) for pitchers and has the 3rd-lowest WHIP of all-time* – but it is also beyond ludicrous that no previous player had received 100% of the cast ballots since voting began 84 years ago. (We will now likely see more unanimous selections in the future.