Reigns handed Strowman his first ever singles loss at WWE Fastlane, but it was The Undertaker who answered Strowman's call, and the monstrous former Wyatt Family enforcer quietly backed down from The Undertaker and left the ring.
Reigns then made his entrance and stared down the Undertaker in the ring, telling the WWE legend that "this is my yard now" - a declaration that was met with loud boos from the audience.
The Undertaker's streak is over - his current WrestleMania record is 23-1 - and for the first time ever, he might actually be the underdog heading into his WrestleMania match.
WWE has made it clear it wants Roman Reigns to be the post-John Cena face of the company, but whether or not fans will accept him is another matter entirely. Like Cena, Reigns is showered with a mix of boos and cheers from fans in arenas across the country - and wherever he goes he elicits a strong reaction, which is perhaps the best metric to judge a wrestler's value.
The key difference, though, is that even the fans booing John Cena generally respect what he's accomplished in WWE over the last 15 years. Fans booing Roman Reigns seem to sincerely loathe "The Guy," and should The Undertaker essentially pass the torch to Reigns in Orlando, he might become the most despised star in WWE history.
Although The Undertaker is now 51, the match against Reigns in April 2nd may not be his retirement match. He's already been involved for the promotion of WrestleMania 34, set for next year in New Orleans - the city where Brock Lesnar broke the streak three years ago.
While Reigns vs. The Undertaker does feel somewhat thrown together, as aside from an interaction at the Royal Rumble there's not much to tie the two together, what makes the match a must-watch is that you could easily make an argument for either man to win.
Will The Undertaker put Reigns over on the biggest stage in the sport? Will Reigns retire the man who defines WrestleMania and become a comic book megavillain in the process? Will Taker turn back the clock and deliver another epic performance at WrestleMania? It's all possible.
One big question remains, though: What's in the cards for Braun Strowman.
Strowman had been taking over Raw in recent months, but after his loss at Fastlane and the news that Reigns vs. Undertaker will be a one-on-one match and not a triple-threat, there aren't very many opponents left for Strowman to choose from.
He could always pop up in the Andre The Giant Memorial Battle Royal, or perhaps he'll be involved in Reigns vs. Undertaker... but Strowman has become too essential to Raw to be snubbed at 'Mania.