Cooperstown Credentials - Unanimous

"I have nothing to prove. I've done it all. I just have to do it again." - Mariano Rivera

Mariano Rivera’s unanimous election to the Baseball Hall of Fame in 2019 was a groundbreaking moment, not only for his individual career but for the Hall’s storied history. The Baseball Writers' Association of America (BBWAA), which is responsible for electing Hall of Famers, has historically been hesitant to award a player 100% of the vote. For decades, even some of the greatest players in the game – legends like Babe Ruth, Hank Aaron, Willie Mays, and Ted Williams – failed to garner unanimous support despite their unquestionable contributions to the sport.

Rivera’s achievement was significant for several reasons. First, his career as a closer, a specialized position that typically doesn’t receive the same level of reverence as starting pitchers or everyday position players, was considered among the most dominant in baseball history. Rivera is widely regarded as the greatest closer of all time, with his career 2.21 ERA, 652 regular-season saves (a Major League Baseball record), and 13 All-Star Game selections. However, it was his postseason brilliance that truly set him apart: he saved 42 games in the playoffs, more than any other pitcher, and posted an astonishing 0.70 ERA across 141 innings in October, helping the Yankees win five World Series championships during his tenure.

Rivera’s election into the Hall of Fame with a perfect 100% of the vote broke a psychological barrier that had lingered for years. Many baseball writers and voters had held the belief that no player was ever truly “perfect,” and thus withheld votes as a matter of principle, even from players universally acknowledged as among the greatest to ever play. This was true for Babe Ruth, who received 95.13% of the vote in the Hall’s first-ever class in 1936, and Hank Aaron, who received 97.83% in 1982, despite both being all-time greats with careers that left an indelible mark on baseball.

The sentiment among some voters had always been that if the likes of Ruth or Aaron didn’t receive unanimous votes, then no player should. However, as time passed and the voting body evolved, this long-standing tradition began to soften. Ken Griffey Jr., in 2016, came remarkably close, receiving 99.32% of the vote, missing unanimous selection by just three votes. It felt like the baseball world was on the verge of breaking this unwritten rule, but it was Mariano Rivera’s induction that finally crossed the threshold.

Rivera's unanimous selection was also symbolic of his character and the respect he commanded not just as a player, but as a person. Known for his humility and grace both on and off the field, Rivera embodied the qualities many believe are hallmarks of a Hall of Famer. He was always regarded as a true professional, representing not only the New York Yankees but the game of baseball with dignity. The fact that Rivera’s election came in the same year as two other legendary pitchers, Roy Halladay and Mike Mussina, and Edgar Martinez, one of the greatest designated hitters of all time, made the 2019 class particularly special.

Mariano Rivera’s 100% vote also raised the question of who might be next to achieve this feat. Some speculated that Derek Jeter, Rivera’s longtime teammate and another iconic figure in the Yankees' dynasty, might follow suit. While Jeter was elected to the Hall of Fame in 2020, he fell one vote shy, receiving 99.7% of the vote. The debate over unanimous election remains a point of discussion, with players like Albert Pujols, Clayton Kershaw, and Mike Trout potentially vying for that perfect mark in the future.

Rivera's accomplishment wasn’t just about numbers or records—it represented a shift in how the Hall of Fame voters viewed the process. The notion that no one could be perfect, and therefore no player could receive a unanimous vote, began to fade, as the respect for Rivera’s dominance, postseason excellence, and character culminated in an achievement that was once thought impossible.