The Undertaker will return to WWE for 900th episode of SmackDown Live

WWE have yet to confirm news of Undertaker's SmackDown appearance, or whether his appearance would make him a commodity of the Tuesday night show.
According to the Mohegan Sun Arena in Wilkes-Barre, Pa, which tweeted the news of the Phenom’s comeback for the 900th episode of SmackDown Live.
It remains unclear whether the 51-year-old will participate in a match.