2 Superstars The Undertaker should face at SummerSlam and 2 Superstars he shouldn't 

#1 Should face: Roman Reigns

A rematch?

There is no denying that Roman Reigns could be an ideal choice to face Undertaker at the biggest show of the summer. Even though Undertaker and Roman Reigns will be in the same team at Extreme Rules, we could see a twist. A heel turn for the Phenom could lead to a blockbuster match between Reigns and Undertaker.

When Undertaker showed up to rescue Reigns last week, it didn't make sense. The two men have a history as they faced each other at WrestleMania 33. Apart from Brock Lesnar, Reigns became the only other man to defeat The Undertaker at the Grandest Stage of Them All. A large number of fans assumed that it was the last match for the Phenom as he left the wrestling attires in the ring. However, the Undertaker came back and he is still wrestling.

The rivalry could restart after Extreme Rules and the Phenom could take revenge for his previous loss. Judging by the hype of their last bout at Showcase of Immortals, they could tear the house down at SummerSlam.