There have been so many rumors and speculations about the answer to this question. As of right now the Undertaker is out injured with a surgically repaired rotator cuff. It is possible that he will not be active for Wrestlemania 27. If he is active there are several possibilities. One rumor is Wade Barrett because Wade helped Kane in the BUried Alive match. ANother new rumor is Sting! Yeah just heard that one, apparently the WWE wants to sign him and then put him in the Hall of Fame (he deserves to be in the Hall of Fame for sure). Other rumors include Brock Lesnar (please, this one is stupid.) The Rock (highly unlikely). Goldberg (good chance here but still unlikely) And another one is Chris Jericho. Only time will tell what the answer is.
He will face Triple H at WrestleMainia27
No one knows that yet, but at WrestleMania 27, Triple H will face Undertaker.
I don't think "play" is the right word :) But Triple H will face The Undertaker on WrestleMania 27.
Triple H
Triple H
At Wrestlemania 27 Undertaker will face Triple H in an attempt to break his undefeated streak
The Undertaker's opponent at WrestleMania 27 was Triple H.
Shawn Michaels will face undertaker at wrestlemania XXVI
The UnderTaker did lose at WrestleMania.
As per February 21, 2011 Monday night Raw Live event, Triple H faces Undertaker at WrestleMania XXVII and Even Undertaker accepted his challenge and agreed to face him in No Holds Barred Match.
Sadly, no he isn't. He lost to Brock Lesnar at Wrestlemania 30. He is 21-1. He is going to face Bray Wyatt at Wrestlemania 31 in a couple days.
the undertaker
Yes. he made his return before Wrestlemania 27 to face the Undertaker.