To deposit from Ethereum into a sports betting account you have to:
Find the deposit button, and click it.
Select Ether or Ethereum as the payment method.
By itself, the site will generate the address you’re going to use. Now, copy the address.
Paste the address into your ETH wallet.
Fill in the amount you want to deposit.
Click the “submit” button.
In case you’re using your phone, a lot of gambling sites will make the QR code available for you to scan instead.
The monies will be transferred.