Earlier in the year this match was rumoured for WrestleMania, and although nothing more has been heard for a while, many are clinging on to the hope that it will still go ahead. There's no doubting the fact that Undertaker vs. Cena would be a huge match, and a fitting conclusion if it turned out to be the Phenom's curtain call. A feud between the two wouldn't have to be overly complex. The motivation for both is clear; Undertaker would want a fitting final opponent, while Cena is - of course - game for any challenge. Convincing arguments can be made for either man to win the eventual match in Dallas, but I'd personally plump for 'Taker. Yes, it's traditional for a veteran to put someone else over in his final match, but John Cena is hardly a young up-and-coming face of the company. He's been around for over a decade now, and spent most of that time at the top of the card. Undertaker, meanwhile, can finally have a huge victory to make up for the loss of his streak (and no, that WrestleMania 31 win over Bray Wyatt isn't nearly enough).