#4 Sting

WCW Icon Sting made his WWE debut in 2014, and the company involved him in a rivalry against Triple H. Their match happened at WrestleMania, where The Game won. However, fans think that Triple H should have lost this match because it was Sting's debut fight and he needed this victory more than anything else.
Later in a rivalry with Seth Rollins, Sting nearly paralyzed himself. It was in a WWE Championship match when this tragedy happened. Since then, the former WCW Heavyweight Champion hasn't stepped foot in a wrestling ring.
He's always said keeping a dream match against The Undertaker is on the exception list, and there were rumors this match could happen at WrestleMania, but it seems like WWE wants AJ Styles to challenge The Undertaker at the show. However, Sting could return soon, probably at a Saudi Arabia event against The Undertaker.
Fans have craved this match since the WCW days, but are they finally going to witness this in 2020?