Note: These allegations remain unverified at this time, pending further investigation.
Don't you realize that you just sound stupid here?
If you have no proof or evidence about the said unethical practices, then shut the hell up and don't waste our time. I didn't know people can be this cocky.
Most probably OP wants to wins the gambling sites contests and in case he loses, he will put the blame to the gambling sites being rigged.
Maybe he forget that there are other people participating in the contest for a win too and we should not find the excuses for the loses. Just accept them especially in the gambling world.