#4. Brock Lesnar vs. former WWE Champion Bobby Lashley
Bobby Lashley has noted several times that one of the reasons he returned to WWE in 2018 was because there was a promise of a match against Brock Lesnar.
Lashley was been built as an unstoppable force as WWE Champion, and it appears that Big E is the only star who has his number.
Lesnar is currently part of a feud with Roman Reigns, but it's likely that after their match at Crown Jewel, the two men will go off onto different paths.
Lesnar could then make his return at Royal Rumble. On entering the Rumble match, he could pick up a feud with Bobby Lashley.
This is a match that WWE has been waiting to pull the trigger on for a while. It can be fantastic as a backup if The Rock isn't able to make his return.
Lesnar has main evented WrestleMania on several previous occasions while Bobby Lashley deserves the spot given the work he has been putting in over the past few years.