Matt Riddle was part of Sunday's Royal Rumble match but despite entering at #23 (and long after Brock Lesnar had been eliminated), he only lasted around a minute before being thrown out by King Corbin. So, why not keep him in the match a little longer?
Well, Dave Meltzer is reporting that Riddle has backstage heat in WWE which is why he was booked like that. We don't know what he's done to rub people the wrong way but it doesn't sound good.
It's no secret that Riddle is a rather difficult character and that his comments about both Goldberg and Brock Lesnar have led to backstage verbal altercations with both men. He's also hinted at problems with his fellow NXT Superstars in the past, two which Tommaso Ciampa responded: "The boys shall police themselves. Aka go f--- yourself."
Whether WWE wanted to just teach Riddle a lesson or have some serious problems with him is hard to say but we'll hopefully learn more about this situation as it develops.