This one would be an outside bet, until you stop and think about how much money it would be worth to WWE. The Rock versus The Undertaker is about as big as it could get for a mainstream audience. Both are legendary names, having been top stars during the Attitude Era. Putting them against each other would be pure box office, definitely the kind of main event that would smash WWE's Network subscription record. The problem with this is, Rock doesn't come cheap, and is unlikely to work any date other than Mania 32. But with rumours linking him with a return at SummerSlam, it can't be fully ruled out that Rock Undertaker is a possibility.
