Undertaker went on to hit Henry with a Tombstone Piledriver and then pushed him into the casket to win the match and keeping his undefeated WrestleMania streak alive improving his WrestleMania record to 14-0 . Undertaker then performed a Tombstone Piledriver on Henry and pushed him into the casket to win the match and improve his WrestleMania record to 14 â `` 0 .