3 ways The Undertaker could retire before WrestleMania 35, or at the event

#2 Shawn Michaels called out by The Deadman

The Show Stopper stops The Deadman's show

Shawn Michaels got a surprise guest when he returned to hype the match between his friend Triple H and The Undertaker at WWE Super Show-Down.

If Shawn interferes during the match at WWE Crown Jewel, we may see The Undertaker send out a message to The Show Stopper around or after Royal Rumble, for a match at WrestleMania, and this would be 'best for business'.