#2 Undertaker and John Cena not to be a part of the SummerSlam
Undertaker and John Cena are two of the biggest ambassadors of the WWE. They are such huge names that even non-wrestling fans can associate them with the sport. So, a Big Four PPV without either of them might sound strange. However, Cagesideseats speculate that it could be the case.
With only two weeks left for the show and no mention of either of the superstars, it is highly improbable that we would see them square-off. Undertaker and John Cena did have an impromptu match at WrestleMania 34, but it wasn't well-received by the WWE Universe. However, the manner in which the match occurred asserted us that they are going to clash again somewhere down the line.
John Cena vs. Undertaker can turn the heads of the WWE Universe anytime. Whether they can deliver the match or not, is a different thing. It would be bad news for the WWE Universe if this rumor comes true.