“I wanted to make sure that Vince was sure” – What is the real story behind The Undertaker losing his unbeaten streak to Brock Lesnar at WrestleMania 30?

What is the real story behind The Undertaker losing his unbeaten streak to Brock Lesnar at WrestleMania 30? The Undertaker’s Wrestlemania streak is one of the most predominant streaks in WWE history. But, at WrestleMania 30 in 2014, the Beast…