WrestleMania 32 is supposed to be the biggest 'Mania in history, well that's what the WWE want anyway.
In reality, thanks to a combination of injuries to current stars and retired superstars deciding not to make a return to the company, WrestleMania is struggling to sell out its 100,000 plus allocation at AT&T Stadium in Arlington, TX.
The card for the event is really struggling to entice people in, which is apparently what necessitated the return of Shane McMahon to try and get fans reinterested in 'Mania. This is after The Undertaker's original opponent had to pull out. That opponent was John Cena.
Dave Meltzer noted in the latest issue of The Wrestling Observer, via Wrestling Inc, Cena vs Taker was meant to be taking place in what would likely be the last big feud of The Deadman's career before retirement.
In a twist that actually makes sense, Vince McMahon was treating the potential Cena vs Taker match as the actual main event of WrestleMania - rather than the clash for the WWE World Heavyweight Championship between Triple H and Roman Reigns.
"It was noted that Vince McMahon was "devastated" because he planned on the match between the two legends to carry the event," Meltzer's report stated.
This is why Shane has made his comeback, because Cena hurt his shoulder and Undertaker needed a new opponent. The deal to bring Shane-O-Mac back was made only four weeks.
HHH vs Roman was never going to be enough to sell out WrestleMania on its own, so Vince essentially created a co-main event between two legitimate huge names.
Roman Reigns has still not been accepted by the WWE Universe, and in his last big match - at Fast Lane - he was booed out of the building compared to the babyface pops for Brock Lesnar and Dean Ambrose, two stars who WWE fans would much rather seen in the main event at 'Mania.
So, with a hated babyface in the real main event, the WWE needed something big to back it up. Taker vs Cena would definitely have been that. We'll have to wait and see if Shane McMahon vs Taker can prove a worthy backup.