The Undertaker has been a once-a-year performer for WWE over the last half-decade, only participating in matches at WrestleMania while trying to extend his (previously) perfect streak at the event.
With the streak now over at the hands of Brock Lesnar and revenge, as well as possibly retirement on his mind, the Dead Man returned to WWE on Sunday, interrupting the WWE World Heavyweight Championship match at the Battleground pay-per-view in St. Louis.
Just when Brock Lesnar appeared to be on the verge of defeating Seth Rollins and reclaiming the WWE World Heavyweight Championship, the lights went out, a familiar DONG sounded ... and the Undertaker appeared in the ring. Undertaker delivered two Tombstone piledrivers to the Beast Incarnate, presumably rendering the match a no contest.
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After laying Lesnar out, Taker left the ring with fans chanting his name but came back in to deliver one more Tombstone. Taker ended the segment by dropping to one knee and posing as his music played and the lights went out.
This was Undertaker's first appearance on WWE television since WrestleMania 31, when he defeated Bray Wyatt. And now it appears as if WWE has reintroduced The Undertaker with a match at SummerSlam against Lesnar, as the veteran interrupted Lesnar's title match with champion Seth Rollins on Sunday and laid waste to the man that shockingly ended his record 21-0 undefeated streak at WrestleMania.