Naomi Osaka and Stuart Duguid are leaving IMG to start their own sports agency, a structural break that puts one of tennis's highest-earning athletes in direct competition with the representation conglomerate that helped build her $50 million+ annual off-court income.

Duguid has represented Osaka since 2019, when she held the world No. 1 ranking and Nike, Louis Vuitton, and Mastercard were already writing eight-figure checks. The move formalizes what has effectively been a bespoke practice inside IMG—Osaka as Duguid's sole marquee client, her deal flow handled separately from the firm's tennis division. She already co-founded Hana Kuma, a media production company, and Kinlò, a skincare line, both outside IMG's standard athlete-brand playbook. The agency launch is the logical endpoint: full control of the commercial architecture, no revenue split with a parent firm.

The timing matters for two reasons. First, Osaka returns from maternity leave in 2025 after giving birth in July 2024, and sponsor renewal windows are open. Her original Nike deal, signed before she won the 2018 US Open, is up for renegotiation. Uniqlo, Tag Heuer, and Panasonic contracts all face similar cliffs in the next 18-24 months. A standalone agency allows Osaka and Duguid to negotiate directly, keep 100% of commission economics, and avoid internal conflicts when IMG represents competing athletes (Emma Raducanu, Carlos Alcaráz, Simona Halep at various points). Second, athlete-founded agencies have become structurally viable in the last 36 months—Kevin Durant's Thirty Five Ventures, Naomi Osaka's Hana Kuma, Serena Williams's Serena Ventures all carry operating leverage once you cross $30 million in off-court revenue. Osaka cleared that threshold in 2020 and hasn't dipped below it since, even while ranked outside the top 50 on court.

The risk is distribution. IMG's strength isn't creativity; it's the Rolodex. When a new watch brand in Zurich wants a tennis face, IMG has 40+ athletes to pitch in one email. Osaka's new shop will have one. That matters less at the top end—LVMH and Nike know how to reach Duguid directly—but it matters for the $500K-$2M deals that fill out an endorsement book. The counter is that Osaka doesn't need volume. She needs four to six blue-chip sponsors at $8-12 million each, plus equity stakes, plus licensing deals where she owns the IP. That's a different sales motion, closer to raising a venture fund than selling athlete inventory.

Watch for three things. First, who Osaka signs as clients beyond herself—if Duguid recruits two or three top-20 players in the next 12 months, the agency has escape velocity. Second, whether the new firm takes outside capital. Athlete agencies typically bootstrap, but if Duguid raises a $10-20 million seed round from family offices or sports-focused funds, it signals ambition to build a rival platform, not just a boutique. Third, the Nike renewal. If Osaka re-signs at $10+ million annually and announces it through her own firm, she's validated the model. If she signs at $6-8 million, the bundled-services discount was real.