#2 The last chance
Following on from the derision of his condition, Father time has caught up with The Undertaker. Many would argue it caught up to him after the 'end of an era' match against Triple H. He has looked slower every year, had a prominent gut during his feud with Reigns last year, and his arsenal of moves has dwindled to strikes and finishers. Reigns was not experienced enough to carry Taker to a good match physically or emotionally, and it showed during their bout last year.
Cena however, has shown to be great in ringleader and has proven it time and time again over the past five years. He has more than enough ability to help carry the Undertaker to a classic, story-driven match to hide his ever-shrinking physical capabilities.
Corey Graves deleted his Tweet! More details HERE.
Recent footage from Michelle McCool's Instagram featured Undertaker working out, and he looked like he was in the best shape in years, which may have credence in his preparation to give everything he has one more time in the ring and allow him to keep up with Cena.