5 things that can happen at WWE Survivor Series 

#4 Undertaker returns for his vengeance

Undertaker was last seen at Wrestlemania following a devastating loss to Roman Reigns

The Undertaker was retired by Roman Reigns at Wrestlemania 33. This was only the second loss at Wrestlemania for the "Dead Man". Since then, he has kept off the WWE and many have assumed he is retired and only awaiting a hall of fame induction. However, The Undertaker could make a surprise return to the Survivor Series.

This being the event in which he made his debut 26 years ago. He would most likely interfere in a match involving Roman Reigns and the Shield. Expect the Undertaker to attack the members of The Shield and stand tall alongside his brother Kane. While we do not anticipate a Wrestlemania match for The Undertaker, it makes perfect sense for him to make one final appearance inside the square in an event where he made his debut over two decades ago.