Deposit at least $10 into your new BetRivers Sportsbook account via any number of offered deposit methods.Complete the online registration that requires information such as name, address, email and date of birth (must be 21 years or older).New users can take advantage of BetRivers NY Sportbook’s introductory $100 Second-Chance Bet and follow the steps below: How to sign up for a BetRivers Sportsbook account and get going is a relatively simple process that ESNY will help with every step of the way.