#4 Braun Strowman vs Roman Reigns

There isn't much one could say against the feud of Braun Strowman vs Roman Reigns, as both these men and the WWE creative team have put their best efforts forward to ensure that every single match and segment involving these megastars are successful.
And while fans thought that Reigns and Strowman's rivalry was a foregone conclusion after WWE seemingly left it unfinished after Summerslam 2017, last week on Raw Strowman was assaulted by a newly reunited Shield, as they oddly stopped him from cashing in his Money in the Bank briefcase.
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While rumours suggest that it will be Kevin Owens that faces Roman Reigns at Hell in a Cell for the Universal Title, WWE should take time to build up KO once again after taking his credibility and destroying it at Summerslam this year.
Moreover, Strowman and Reigns waging war inside the Hell in a Cell are just perfect as their feud has been brutal and extremely destructive, so it would only make sense for them to put on a war inside a structure that would best suit their programme.