BetMGM announced Friday morning that it will go live in the Empire State on Monday. The book did not announce a specific time for its launch.

The sportsbook was one of nine approved operators in New York, but was not part of the initial group able to go live last Saturday.

BetMGM, a joint venture between MGM and European gambling company Entain, has become a legitimate power in the mobile sports betting space, becoming the second or third most bet with app in every state it has entered. New York is its 19th and biggest market to date.

It’s behind DraftKings and FanDuel in overall market share but has become a real contender in the U.S. sports betting space.

“With today’s monumental news, we’ll now be able to fully activate our relationships with MGM Resorts’ Empire City Casino and Madison Square Garden. We look forward to offering customers in New York unique experiences that they can’t access on any other platform,” BetMGM CEO Adam Greenblatt said in a release. “A huge thank you to the New York Gaming Commission as well as to our entire BetMGM team who have worked tirelessly to bring this to fruition.”

MGM will join FanDuel, DraftKings, Caesars and BetRivers as the books already live.

Four more operators are still waiting to launch — PointsBet, BallyBet, Resorts World and WynnBet.

MGM is integrated with BetSync, which automatically tracks your bets placed there in The Action Network app.

New York has a 51% gross revenue tax rate on sports gambling, meaning profitability for books within the state will be dependent on high volume.

New York has not yet reported numbers from its first weekend, but it’s expected to be bigger than the first two and a half years of handle from the four upstate in-person sportsbooks.