6 Original WWE Royal Rumble rules you didn't know existed 

#2. Superstars didn't have to go over the top rope to be eliminated from The Royal Rumble

One of the big differences between a battle royal and The WWE Royal Rumble match is the fact that it is clear that superstars have to go over the top rope in order to be eliminated.

This rule has allowed several stars to perform moves on the outside when the ring gets too full in the latter stages of the match, but it isn't a rule that was always in effect.

Back in 1997, Mil Mascaras was able to eliminate himself from the match by going through the middle rope. The Luchador took out two fellow stars on the outside but used the middle rope to get out of the ring and climb the turnbuckle.

The elimination stood and the commentary team was forced to cover for this by noting that the star was still confused about the rules of The Royal Rumble match. This also meant that he had eliminated himself from the match when there was some confusion as to whether or not self eliminations counted at this point as well.

It appears that there are still several questions regarding his elimination more than two decades later.