Page 1

RUSH STREET Exhibit 99.1 INTERACTIVE RUSH STREET INTERACTIVE ANNOUNCES THIRD QUARTER 2021 RESULTS AND RAISES FULL YEAR 2021 GUIDANCE - - Third Quarter Revenue of $ 122.9 Million , up 57 % Year - over - Year- - Full Year 2021 Revenue Guidance Raised to between $ 480 and $ 500 Million - CHICAGO - November 10 , 2021 - Rush Street Interactive , Inc. ( NYSE : RSI ) ( “ RSI ” ) , a leading online casino and sports betting company in the United States , today announced financial results for the third quarter ended September 30 , 2021 . Third Quarter 2021 Financial Highlights • Revenue was $ 122.9 million during the third quarter of 2021 , an increase of 57 % , compared to $ 78.2 million during the third quarter of 2020 . • Net loss was $ 18.9 million during the third quarter of 2021 , compared to a net loss of $ 26.5 million during the third quarter of 2020 . • • • Adjusted EBITDA¹ loss was $ 12.2 million during the third quarter of 2021 , compared to an Adjusted EBITDA of $ 1.0 million during the third quarter of 2020 . Adjusted advertising and promotions expense ¹ was $ 45.4 million , or 37 % of revenue , during the third quarter of 2021 , compared to $ 17.5 million during the third quarter of 2020 . Real - Money Monthly Active Users ( " MAUS " ) in the United States for the third quarter of 2021 were up 26 % year - over - year with average revenue per MAU ( " ARPMAU " ) of $ 380 during the third quarter of 2021 . • As of September 30 , 2021 , RSI had $ 347 million of unrestricted cash and cash equivalents . Richard Schwartz , Chief Executive Officer of RSI , said , “ We are very encouraged by the ongoing execution of our business strategy across the entire organization . New market access and launches have continued to be a significant driver of our overall success . We have recently launched the PlaySugarHouse online sportsbook and four of the fifteen planned retail sportsbooks in Connecticut . RSI is one of only three permitted operators in the state and is the exclusive partner of the Connecticut Lottery . Additionally , we recently launched with the BetRivers brand for online sports betting in Arizona via our partnership with the Arizona Rattlers , as well as our social gaming platform , CASINO4FUNⓇ in Ontario which will set the stage for future incremental revenues when the Ontario market goes live . Earlier this week , RSI was selected by the State of New York as one of just nine operators permitted to offer mobile sports wagering in the state . Upon launch of its online sportsbook in New York , RSI will be one of only three companies with online gaming market access in New York , New Jersey , and Connecticut . The New York City media market , the largest media market in the nation , taps into all three states in the tri - state region , giving RSI significant long- term marketing efficiencies . " In addition to growing our current markets , we have worked to expand our bet offerings to existing customers . Single - game- parlay markets are now live in all of our sports betting states and we have launched BetRivers.com and PlaySugarHouse.com branded , live - casino studios for players in Pennsylvania and New Jersey . Our exclusive partnership with Magic City Jai - Alai allows us to offer sports betting on the fast - action sport . ” 1 This is a non - GAAP financial measure . Please see " Non - GAAP Financial Measures " for more information about this non - GAAP financial measure and " Reconciliations of GAAP to Non - GAAP Financial Measures " for a reconciliation of the most comparable measure calculated in accordance with GAAP to this non - GAAP financial measure .