In an email to customers, the business said the brand – which operates in Great Britain – would be “closed to all customers” as of 31 March.
After this point, players would not be able to place bets, make deposits or cash out open bets.
All bets that are ruled to be winners before 28 April 2023, however, will still be honoured with winnings paid in full.
The website will remain available in order to process withdrawals until the end of 28 April 2022.
Winnings after the site closes must be requested via the operator’s customer support team.
Mansion also operates the MansionCasino, Casino.com and SlotsHeaven sites, all of which focus on casino gaming rather than sports betting. The business said the closure of its sports betting site would help it focus more on casino.
“Mansion Group have decided to focus on our award-winning casino brands Casino.com, MansionCasino.com, and SlotsHeaven.com and continue to operate in the UK online casino market,” it said.
In addition, the brand said it had been working on other markets, including pursuit of an online gaming licence in Ontario, which is set to open in April.
“There are other markets such as Spain, where we are operating with MansionCasino.es, and Canada where we are in the process of applying for a licence for their flagship brand, Casino.com, in the soon to be regulated Ontario market.”