Like we have seen in many cases in which the @OP have some nice offers which are probably scam attempt to have funds from you and then if they get any victim who contacted them via pm or any source then they don't reply to any of the doubts so it's better to forget it also if you want to be safe.
I don't think it's that what op wanted. Base on op, it is about creating for him where you will deposit it yourself and op will only provide information about the sports that op want you to bet. If you lose op have nothing to do with it but if you win op will ask for a portion of the amount you won. This is how I see in the post made by op. I wouldn't risk it myself if ever I want to bet.