The Undertaker's 20 greatest rivals

For nearly 25 years, The Undertaker has earned unmatched respect from both the WWE Universe and his peers by facing off with the very best the squared circle has had to offer. Nearly every competitor who has left a mark on sports-entertainment in the past quarter century has found themselves in the intimidating presence of the legendary Phenom at least once. But which of The Deadman’s opponents proved themselves to be the most worthy adversaries?

View photos of The Undertaker's biggest rivalries | Watch videos of his legendary clashes

As Brock Lesnar prepares to face The Undertaker on The Grandest Stage of Them All, WWE.com looked back at The Deadman’s 20 toughest opponents. These are the men that danced with the devil and lived to tell the tale.

Who do you think was The Undertaker's greatest rival? Vote now!

Watch The Undertaker vs. Shawn Michaels on WWE Network in perhaps the greatest WrestleMania match of all time