If undertaker were to lose at wrestlemania who would he lose to?

I agree with nishanth. The Showstopper Shawn Micheals is a legend who has been in some of the best matches in history! That is just one more accomplishment he should add to his list of greatest hits! But If I had to choose someone else I would say John Cena. Many people hate him they fail to see that he stands for the soldiers and the kids. I think that would be a great match and the perfect day for undertaker to Rest In Peace! (lol)