Courtesy of WWE.com:
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?