#1 Brock Lesnar vs. The Undertaker (WrestleMania XXX)
While a lot of the WWE Universe might not think this match even deserves a spot on this list, it impact on the overall landscape of the company pretty much makes it mandatory. This was the match that ended The Undertaker's sacred undefeated streak at WrestleMania.
Keep in mind that this does not mean the match was a technical masterpiece or even one of Lesnar's best matches in a more traditional sense, but the impact and the setting are too much to ignore in this case. It was the one moment that caused shock and disbelief within the WWE Universe and made many people question if they had actually seen what just took place befoe their eyes.
Lesnar went toe to toe with The Undertaker, endured his offensive flurry and in the end he was able to lay out of one the most decorated Superstars in WWE history with a vicious F-5 into the canvas.
While many people have complained that a young, up-and-coming Superstar (such as Bray Wyatt) should have been the man to end The Streak, this may have been WWE's way of showing how much stock they were going to put into Lesnar going forward. The match told a very tragic story, with Undertaker suffering a legitimate concussion early in the match and still fighting valiantly to protect his yard. Sadly for him, The Beast became the owner of The Yard that night.
Like it or not, this match defined a decade.