Professional wrestling's greatest streak is over.

The Undertaker lost to Brock Lesnar at WrestleMania XXX Sunday, ending his unbeaten WrestleMania streak at 21 matches.

The streak has been a staple for the pay-per-view event over the past two decades, beginning at WrestleMania VII held in 1991. During his 21-0 run, The Undertaker dispatched opponents such as Jimmy "Superfly" Snuka, King Kong Bundy, Triple H and Ric Flair.

But Lesnar proved too much of a challenge, a moment that stunned wrestling fans and personalities. Thousands of fans took to social media, with The Undertaker's loss becoming a trending topic worldwide.

I am speechless…The Deadman never dies but the streak does. @WWE

- The Miz (@mikethemiz) April 7, 2014

The WWE Universe continues to cheer on their fallen hero #thankyoutaker #WrestleMania https://t.co/QKks4nzLsX

- WWE (@WWE) April 7, 2014

Just landed..I can't believe the winning streak is over…I hear you could hear a pin drop.. #WrestleMania love undertaker..wow!sad!thoughts?

- maria menounos (@mariamenounos) April 7, 2014

75,000+ stunned…shocked…has the mat world imploded? The Streak dies….but the legend will live forever. #WrestleMania

- Jim Ross (@JRsBBQ) April 7, 2014

WrestleMania XXX was held at the Mercedez-Benz Superdome in New Orleans, with an announced crowd of 75,167. Hulk Hogan hosted the event.