#3 Roman Reigns
Like Finn Balor, this was another sad case. Roman Reigns had been chasing the Universal Championship for a really long time and seemed to finally win it at WrestleMania 34. However, WWE got cold feet and booked Brock Lesnar to keep the title for a while longer. Reigns would ultimately triumph at SummerSlam, seemingly beginning an epic, long reign filled with spectacular title defences. However, it wasn't to be. The reign was disappointing due to factors, both controllable and uncontrollable.
The Big Dog gave Finn Balor his Universal title rematch and defeated him in a great TV match. After that, we got the Shield and Dogs Of War storyline which saw a Hell in a Cell match go into a No Contest. Reigns defended the belt only twice in televised bouts, that's why hs run with the title is in the middle.
WWE would have had greater plans for him and the title, but Roman Reigns had to give up the Universal Championship due to the return of his leukaemia. Right now, his health is his main priority and one can only hope that he gets better soon. Hopefully, we have not seen the last of the Big Dog competing in a WWE ring.