Seth Rollins and Baron Corbin have already faced off in Saudi Arabia, with Rollins coming out on top to remain Universal Champion. WWE decided that the feud between the two men wasn't over following this bout since Baron Corbin and the referee didn't see eye to eye and this then led to the former Constable of Raw stating that he would choose his own referee for this weekend's match in Washington.
So far, Corbin hasn't had a lot of luck with referees since Seth Rollins has scared everyone out of the position including Sami Zayn, Kevin Owens, The B Team, Elias and even EC3. This has left the former United States Champion in the position where he's only got a few days to find someone who isn't scared of Seth Rollins to call the match from the middle on Sunday night.
His options are definitely limited, but there are a few interesting avenues that Corbin could look to venture down if he needs someone that isn't afraid to step up to the challenge.
#5 John Cena
John Cena is quite a busy man outside of the ring at present since he's just landed a role in Fast and Furious 9 and is already the host of Are You Smarter Than A Fifth Grader? Interestingly, Cena is someone who has an issue with both Baron Corbin and Seth Rollins since he's feuded with both men in the past.
Cena isn't a natural heel and isn't that likely to step in to help Corbin, but he is someone who isn't scared of Seth Rollins and was backstage at Raw earlier this week. Cena was only backstage to catch up with friends but if the company needed him for a one-off match on Sunday night then he could be available for a cameo and is definitely someone who would help boost the ratings.
#4 Mojo Rawley
Mojo Rawley has been on the sidelines for a long time, but he's been showing signs of a new gimmick over the past few months but the company is yet to give him any ring time. Like many superstars backstage right now he's got to be frustrated by the fact that he isn't being given the chance to show off his new character.
Rollins was on Raw and SmackDown this week and it could be argued that he took TV time that could have been used for someone like Rawley to debut his new character. This kind of frustration leads to hatred even when there's no reason for it and if Baron Corbin came knocking and asked him to be the special guest referee on Sunday night then it would be the perfect platform for him to debut his character and step into the spotlight.
#3 Sting
Sting is someone who definitely has a problem with Seth Rollins (in kayfabe) since it was Rollins who injured him back in 2015 and forced him to later retire from the ring. Rollins was World Champion at the time and was able to defend his title successfully against the WCW legend in a match where he suffered a neck injury.
Sting is still in a position where he's considered athletic and could step into the middle of these two stars if he could be convinced to go against Rollins, which in future could lead to Undertaker vs Sting if he turns heel. This is an unlikely scenario, but it's also one that would make sense if the company looked at stars who have an issue with Seth Rollins and were able to create a storyline surrounding their problems.
#2 Heath Slater
Heath Slater was attacked backstage by Drew McIntyre this past week on Raw and could be set to step into a feud with his former teammate following Stomping Grounds. Interestingly, Heath Slater is someone who would have been in front of the queue for the Special Guest Referee spot since he's got kids and needs the money.
Baron Corbin made Heath Slater a referee when he was the Constable of Monday Night Raw and forced him to face his teammate Rhyno in a match where one of them would be forced to leave the company. Rhyno has since left WWE but Slater is still being misused backstage and could be convinced to referee for Baron Corbin this weekend despite the fact that he doesn't have any issues with Rollins.
For Slater, this could be about money and getting a future shot at the Universal Championship, which is enough for anyone on the roster.
#1 Jason Jordan
Jason Jordan hasn't been seen on WWE TV for over a year and has moved into a position backstage where he is now training to be a producer. A neck injury seemingly cut Jordan's career short and when he was taken out of action he was part of a team with Seth Rollins.
Rollins has since gone on to become a Tag Team Champion with Dean Ambrose and a Universal Champion as well so if Jordan is in a position where he was able to referee this match for Corbin, then he would jump at the chance to get even with Rollins. Even though it wasn't Rollins fault that he was sidelined, Jordan could return for this one off match as a heel and could be the shock factor that Corbin needs to overcome the threat of Rollins on Sunday night.