FanDuel and Sportradar have signed a deal which allows the operator's players to watch live streams directly through its mobile app.
FanDuel will start with streaming tennis and European football, both via Sportradar.
Players will be able to watch a particular live game and also have live odds available to them on the same screen. This ensures they don't have to leave the stream at any point to place a bet.
The agreement is not exclusive, which means other competitors such as William Hill and DraftKings would be able to agree a deal with Sportradar if they chose to.
Neither FanDuel nor Sportradar have disclosed any financial terms of the agreement.
Neale Deeley, Vice President of US Sales and Gaming, Sportradar, said: "We are really excited to bring live streaming to the US market with FanDuel. We have been longstanding partners of both FanDuel and parent company PaddyPower Betfair across a wide range of betting and fantasy services. We’re proud to be an ongoing part of their US expansion plans."
Niall Connell, General Manager, FanDuel Sportsbook, said: "The ability to live stream professional sports inside our sports betting product will provide our customers with a first class betting experience. By making Sportradar’s Live Channel Online available alongside our betting markets, FanDuel Sportsbook continues to be the premier sports destination in the ever growing sports betting industry."