Roulette is often held up as an example of "random chance" but this is not entirely true. There are on occasions patterns in Roulette, especially with certain dealers. In addition, there is a little trick casinos sometimes employ. They loosen the legs on the table to the point it wobbles slightly. The dealer will then lean against the table and watch as the ball is about to drop. They can then pop the ball out of an…
That's a load of rubbish submitted completely without any sort of proof. That might have gone on in a back-alley speakeasy in the Prohibition era, but in any sort of reputable casino - not a chance. The casino has no need to cheat at roulette. They have a built in edge.
Your claim "they wouldn't do this because they already have an edge" is just silly. Why wouldn't they take a chance to make more money? Especially since, as you say, "proof" is a bit hard. An accidental bump. That's all. No intentional cheating here.
I would like to re-iterate my main point. This is something to watch for if you are a roulette player. If the table wobbles when you push against it... walk away.