WrestleMania XXVIII (28) hasn't happened yet. WrestleMania XXVII (27) took place about a month ago in Atlanta, GA. The Undertaker defeated Triple H in a No-Hold Barred Match.
No Undertaker is undefeated at wrestlemania and he already beat Triple H at Wrestlemania X7
At WrestleMania XX in 2004 The Undertaker defeated Kane
No. He lost. The undertaker is still undefeated at wrestlemania
Edge
the rock is certainly, the only one capable, of ending the undertaker's undefeated streak at wrestlemania.
No. Undertaker won the match.
18 people
He will beat HBK at wrestlemania 26
Jimmy superfly snuka
king kong bundy
yes
The undertaker already beat the game triple h