You really can not cross sell. I was trying even before just to see how it does not work. Simply people who come to sports site want surprisingly sport and bet on sport and not on some virtual bs. Yes, many from those degenerate sport bettors will in the end switch to other gambling. But it does not work for getting new gamblers.
You can not also bid on "bet on league XYZ" and give them again some virtual bs or casino.
Those things are close in your affiliate interface, but stop this magic thinking. You can not sell bra in style of grandma in popup shops for teens. It is just laughable of you try.
If you talk to God, you are praying; If God talks to you, you have schizophrenia.