1. The Rock
If The Undertaker is waiting until WrestleMania for his next match, one potential opponent is The Rock. It would be the pairing of two legitimate legends, and is more than worthy of closing the show. It has never been done before at WrestleMania and is the sort of main event that Vince McMahon would love to promote. As for the two men, they've got a great deal of respect for each other. And they're both savvy businessmen, they know how much money they'd stand to make by working a match together. In terms of quality, it should be very good. Taker is usually excellent, and an on-form Rocky can be sensational. If WWE are looking for a true blockbuster Mania main event, one with global mainstream appeal, then Rock Undertaker is the way to go.