Kalshi’s presence in tennis is becoming even more prominent.
Key Takeaways
- Kalshi will receive on-court signage and digital platform presence beginning Monday.
- The USTA’s CEO said the partnership will help ensure the “integrity of our sport.
- Kalshi is now a partner of the world’s largest tennis event.
The popular prediction market operator announced a multi-year agreement with the U.S. Tennis Association (USTA) to become the official prediction market partner of the US Open. The tournament’s main draw got underway over the weekend in New York and runs through Sept. 13.
Kalshi signage will be featured on the courts and digital platforms beginning Monday.
“We’re relentless about keeping tennis at the cutting edge of global sports innovation and fan connection,” USTA CEO Craig Tiley said in a statement. “Partnering with Kalshi gives us an opportunity to pioneer that next generation of fan engagement while ensuring the integrity of our sport.”
This is a major deal for one of the world’s largest exchanges for prediction markets. The US Open is the largest tennis event in the world, drawing 1.14 million fans and offering a prize pool of more than $100 million.
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Volumes up
The partnership with the only U.S. tennis major is part of Kalshi’s broader expansion in the sport. Kalshi signed a deal with Catalist Sports earlier in August, giving the prediction market operator access to livestreams and data from more than 65,000 tennis matches.
Tennis has become a popular sport for contract trading on the U.S.-based platform. Kalshi said Monday that year-over-year tennis volume has grown 25-fold.
“Every summer the US Open takes over New York, and as a New York company, we’re proud to be part of it. Tennis is one of the fastest-growing sports on Kalshi, with fans using our markets to understand what's happening throughout the tournament,” Kalshi cofounder and CEO Tarek Mansour said. “We’re proud to partner with the USTA to give fans even more ways to engage with the game they love.”
Other marketing deals
In other prediction market news, Kalshi recently agreed to multi-year marketing partnerships with five Major League Baseball clubs - the Braves, Red Sox, Dodgers, Padres, and Giants.
Kalshi also has partnerships with the NHL and its Chicago Blackhawks, as well as multiple soccer league marketing agreements. The prediction market operator has accepted over $178 billion in trading volume since launching before the 2024 presidential election as a political and financial trading exchange.
Kalshi expanded to offering sports event contracts in numerous leagues, including the NFL, NBA, and MLB, in early 2025. Since then, sports have dominated Kalshi, reportedly accounting for 80% of the prediction market’s trading.
