Sportsbook deposits for credit card rewards points?

Just a thought here. Is it possible to deposit money into a sportsbook account via a credit card and then immediately withdraw that money to a checking account and just collect the credit card rewards points? Not sure if the sportsbook or cc company will charge a fee or anything.

Another possibility is using the Bilt credit card and funding the sportsbook via the bank account function of the Bilt account. Let me know your thoughts!