Naomi Osaka is leaving IMG to launch her own sports agency with Stuart Duguid, the agent who has represented her for seven years. The move formalizes what was already a de facto single-client relationship and converts Duguid's estimated 10-20% commission on Osaka's endorsement deals into equity in a venture they will co-own.

Osaka won four Grand Slam titles between 2018 and 2021 and built a sponsorship portfolio that includes Nike, Louis Vuitton, and Sweetgreen. Forbes pegged her 2023 earnings at $15.1 million, down from a 2020 peak of $57.3 million when she was the world's highest-paid female athlete. She has not won a tour-level title since Miami in April 2022 and is currently ranked outside the top 50 after extended breaks for mental health and maternity leave. Duguid joined IMG in 2016 and has worked exclusively with Osaka since she became a major client.

The agency model here is narrow arbitrage. Osaka trades IMG's infrastructure—legal, accounting, tour logistics—for cost savings and control. If her current book generates $15 million annually and Duguid's commission runs 15%, that is $2.25 million that now stays in-house, minus overhead. The bet is that Duguid can maintain or grow her brand value without IMG's broader platform. The risk is that a single-client agency has no hedge if Osaka's competitive ranking continues to slide or if a sponsor pulls back.

The comparison is Serena Williams' S10 Entertainment, though Serena built her agency after retiring and brought in outside clients. Osaka is still 26 years old and ostensibly active on tour, which makes the timing unusual. She returned to competition in Brisbane in January 2024 after having her daughter in July 2023. If she climbs back into the top 20, the agency launch looks prescient. If she does not, Duguid will be running a brand-management shop for a former champion, not an agent booking a marquee athlete.

The move also signals confidence in Osaka's off-court business. She co-founded Kinlò, a skincare line, and Hana Kuma, a media production company. Those ventures do not need tour wins to generate value, but they do need sustained public attention. An in-house agency can prioritize those projects in ways IMG might not, especially if Osaka's playing schedule remains limited. The tradeoff is losing access to IMG's cross-sport sponsor pipeline and its ability to bundle clients in negotiations.

Watch whether Duguid brings in additional clients within the next 12-18 months. If the agency remains a single-player shop, it is a personal services company, not a competitive agency. Also watch Osaka's 2025 playing schedule. If she commits to fewer than 15 tour events, sponsors will start pricing her as a brand ambassador, not an active athlete, and that repricing flows straight to the agency's revenue model.

Osaka's Nike deal runs through 2025. Renewal terms will be the first hard test of whether Duguid can extract the same value without IMG's negotiating weight behind him.