#1 John Cena
Yes, John Cena did face The Undertaker at WrestleMania 34 and lost the match in under 3 minutes. This was a dream come true for many fans. But none of them thought that it would be a squash match.
No one was truly satisfied with the match they had. So it makes sense to have a rematch between them, and this time give the fans a competitive match that they wanted to see. There is no better time and place to do this other than SummerSlam 2018.
Only 15 minutes on the whole show would give us the perfect match between John Cena & The Undertaker. It won't matter who picks up the victory but it would give us a memorable moment for the rest of our lives.
John Cena was the face of the WWE for almost a decade and The Undertaker is a living legend. This would be the biggest marquee match on the show and it can also be the last encounter they have with each other.
So these were the 3 wrestlers who could truly face The Phenom at SummerSlam 2018. Let me know in the comments about who do you think should face The Undertaker.