The United States Tennis Association signed Kalshi to an exclusive prediction market deal in the 72 hours before the main draw began, according to three people familiar with the timing. The contract blocks rival platforms—DraftKings, FanDuel, the sportsbook names on every arena shoulder patch—from offering USTA-branded prediction contracts on match outcomes, player advancement, or tournament props. Kalshi pays an undisclosed rights fee and receives courtside branding at Arthur Ashe Stadium, the 23,771-seat showcase court where Serena Williams played her final match two years ago.
The partnership makes the US Open the first Grand Slam to formalize a prediction market sponsorship under CFTC supervision rather than state gambling compacts. Kalshi operates as a CFTC-registered derivatives exchange, not a sportsbook, a regulatory distinction that allows it to offer event contracts on outcomes the Commission deems economically useful. The company launched tennis markets in June 2024 after a sixteen-month review process. The USTA deal followed eleven weeks later, a velocity that suggests the federation's commercial team had been tracking Kalshi's regulatory progress since the review began. One sponsor-side executive noted the USTA typically runs six-month diligence cycles for new categories; the Kalshi negotiation took less than half that.
The deal's timing matters because it preceded the August 26 main draw ceremony, meaning Kalshi branding appeared on broadcasts and in-stadium the moment casual viewers tuned in. Traditional sportsbook sponsors—BetMGM holds the current US Open gambling partnership in twelve states—are restricted to state-specific activations and cannot buy exclusivity across all fifty states where the tournament airs. Kalshi's federal exchange status sidesteps that fragmentation. The contract also includes data rights: Kalshi receives real-time shot speed, serve percentage, and rally length feeds, the same granular stats the USTA licenses to AWS for courtside analytics displays. That data powers Kalshi's in-match contract pricing, a feature the company believes will pull users away from offshore books still offering illegal US Open props.
The second-order effect is sponsor category bleed. If a CFTC-regulated prediction platform now occupies the same courtside real estate as Emirates and Rolex, the USTA has effectively declared event contracts a distinct asset class from gambling. That opens tennis's other commercial inventory—the $42 million the USTA collected in sponsorship revenue in 2023—to a new bidder pool. Allocators sizing minority stakes in leagues or franchises should note: a Grand Slam just validated prediction markets as a premium sponsorship tier, not a vice category requiring segregated activation. The move will accelerate similar conversations at the French Open and Wimbledon, both of which have fielded Kalshi inquiries in the past ninety days, according to one tournament consultant.
Kalshi's founder, Tarek Mansour, was seated in the Emirates suite during the men's final, two rows behind USTA president Lew Sherr. The seating chart is not public, but three attendees noted the placement. Mansour wore a navy blazer with a Kalshi logo pin, visible in the tournament's official broadcast cutaways. The optics—a 29-year-old MIT graduate in a federation president's sightline during a $60 million prize pool final—signal where tennis sees its revenue future. The USTA has not disclosed whether Kalshi's deal includes renewal options or right-of-first-refusal language for expanded Grand Slam partnerships, but contract structures this clean typically include both.
Watch for Kalshi to announce similar deals with at least one ATP Masters 1000 event before the 2025 season. The company raised $30 million in Series A funding in May 2023 and is deploying that capital into sports partnerships at a pace that suggests a Series B is being prepped for Q1 2025. Also watch the USTA's BetMGM relationship, which expires after the 2025 tournament; the Kalshi deal does not technically conflict, but it occupies the same sponsor mindshare, and BetMGM will want clarity on whether its state-level activations still justify the rights fee. The French Tennis Federation's commercial lead, Stéphane Morel, is scheduled to meet Kalshi's partnerships team in October, per one person close to the talks.
The US Open just ran the cleanest institutional test of whether a CFTC-regulated prediction market can perform like a Tier One sponsor. The answer, measured in courtside sightlines and broadcast seconds, is yes.
The takeaway
US Open's Kalshi deal proves CFTC-regulated prediction markets now command Grand Slam sponsorship economics, forcing rival sportsbooks and other federations to reassess category value.
Want the 60-second program for your specific event?
Enter your event and email — we build it and send the branded proposal before lunch. No obligation.
The branded-identity layer Chiefs of Staff and heritage CMOs route through — your name imprinted on real authorized stock, your pick of 200+ brands and 70,000 products, shipped from one accountable house. Nine editorial desks publish the intelligence those operators read before they sign.
200+authorized brands
70,000products · virtual proof on each
9 deskspublishing daily
1997one house, since
70,000 SKUs · virtual proof in 60 seconds · no platform fee · blind-shipped · ASI #217876
Your next customer won't visit your website. Their AI will.
AI assistants have quietly taken over the first step of buying — they answer from catalogs they can read and shortlist whoever can actually ship. Two questions now decide whether you exist to that buyer: can a machine read your catalog, and can you fulfill the order. Most brands fail one or both and never find out why the orders went elsewhere. The winners of this shift aren't the loudest. They're the most readable. Build for the machine that's about to do the shopping.
Built by the craft floor — apparel, media, packaging, and secure print.
This trade runs on hands, not desks. Imprint manufacturing & Komori Press · Canon high-speed secure-media operations is a craft floor — genuine Six Sigma discipline applied to ink, thread, foil, and registration, where a hundredth of an inch is the difference between a brand that reads serious and one that reads cheap. POPS4 is built by exactly those operators: independent, boots-on-the-ground engineers who carry their own book, read a client in microseconds, and put their name on every run. Beyond our own Virginia Beach floor, we work with a vetted network of craft manufacturers across the US — each meeting the highest excellence in QC standards in the industry, each a specialist in its own discipline — so apparel, hard-goods imprinting, media manufacturing, packaging, and secure printing all go to the bench built for them, coordinated from one accountable hub. Short-run from twenty-five units, volume to five hundred thousand. Two hundred authorized national brands, seventy thousand SKUs with virtual proofing on every one. Art archived for instant reorders. Net-thirty corporate terms, NDA-standard white-label — your name on the work, or none at all.
Strategy, positioning, identity, creative, and messaging — wired into an AI system that publishes and distributes on its own. Nine editorial desks generate the authority, the production house ships the physical proof, and the attribution layer tells you which post sold which SKU. What you get is an operating layer — content, catalog, and order path under one roof — that keeps working whether or not you are in the room. Built for principals who would rather own the machine than rent the agency.
Named-account programs — one desk, quiet delivery, NDA-standard.
One point of contact who already knows the file, so nothing restarts from zero between engagements. The work ships blind, under NDA, with your name on it or none at all. Built for single-family offices, heritage-house CMOs, sports-ownership groups, and the agencies that white-label our production. The relationship is the product; the merch is the proof of it.
SFO · Chief of Staff desk. Principal household, properties, aircraft, yacht, calendar, philanthropy — one file.
Shop seventy thousand products. Virtual proof on every one. 24/7.
Drop your logo on any product and see the virtual proof before asking. Quote routes direct to the desk. MCP catalog for AI agents. Celeste for the fast conversation. Full self-service checkout in development.