#5 Seth Rollins entering as the Ironman and winning the Royal Rumble match

In what could be one of the most unpredictable events of the year, Seth Rollins' entering the event at the first spot and going on to win the entire match would be massive. The Architect has definitely solidified his position as one of the biggest superstars in the company and has constantly proved his critics wrong.
With Vince McMahon looking to find a new top guy to carry his vision forward, the Kingslayer stands as an ideal choice to slay the Beast Incarnate at the Show of Shows this year. While Braun Strowman still has a legitimate chance to defeat Brock Lesnar, there's more money in Seth Rollins vs. Brock Lesnar for the Universal Championship.
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Considering that the Boss makes business his first priority, the Architect's victory at the event would certainly ascend his level and give fans something special come April with WrestleMania 35.