Champ, the athlete investment collective backed by 60 professional golfers and tennis players, has taken an undisclosed minority stake in Rhoback, the performance apparel brand worn by Patrick Mahomes and Brooks Koepka. The investment closes a loop the sports marketing industry has discussed for three years but rarely executed: converting athlete endorsement budgets into equity positions at the brand level.
Rhoback confirmed the transaction Tuesday but declined to disclose valuation or check size. A person familiar with the deal said Champ's stake falls between 8% and 12%, valuing the brand in the $150 million to $200 million range. That puts Rhoback above the $100 million threshold where strategic acquirers typically begin diligence on lifestyle brands with distribution beyond DTC. The brand sells through 180 golf pro shops and launched a women's line in September that is already 22% of online revenue.
Champ's structure is unusual. Founded in 2023 by former Wasserman executive Andrew Kline and venture operator Matt Higgins, the group pools capital from athletes who commit $50,000 to $500,000 each. In return, they receive pro-rata equity in Champ's portfolio companies and access to board-level financial modeling typically reserved for family offices. The Rhoback investment marks the first time Champ has taken a brand stake rather than a pure technology or media play. Its prior investments include Whoop competitor Vital and a pickleball court-reservation app.
The Rhoback deal matters because it formalizes a market that has operated on handshake terms. Athletes routinely accept equity in lieu of cash for endorsements, but the arrangements are bilateral, illiquid, and often structured as warrants that expire if the athlete posts a competitor's logo. Champ's model aggregates that demand, giving brands a single negotiation instead of 15 separate calls with agents who may or may not understand cap tables. For Rhoback, the deal brings 60 athletes who will wear the quarter-zips on camera and, critically, lobby their club's head pro to stock the brand.
The economics work if Rhoback's revenue compounds at the rate its comparable-store sales suggest. The brand reported 47% growth in 2025, driven by the women's line and a shift from polos to hoodies that carry 18-point higher gross margins. Champ's athletes are concentrated in golf and tennis, two sports where apparel brands historically struggle to convert tour visibility into retail velocity. Rhoback has solved half of that problem: Its men's quarter-zip is the third-best-sellingsku in Callaway Golf's retail channel, behind only gloves and balls. The women's line, launched eight months ago, is still testing price points.
Family offices sizing stakes in apparel brands are watching the structure. If Champ's athletes generate measurable top-line lift, the model becomes a reference case for collectives in other verticals. The NBA has 14 active investment groups, none of which have announced brand deals. The challenge is measurement: Rhoback's sales data is proprietary, and Champ has not disclosed whether its athletes receive performance bonuses tied to revenue hurdles. Without that transparency, the deal reads as a clever marketing partnership dressed in equity language.
The test comes in Q3, when Rhoback's fall catalog hits and Champ's athletes begin posting photos in the new women's hoodies. If Instagram engagement converts to pro-shop orders, the brand will have validated a model that turns endorsement spend into balance-sheet assets.
Rhoback's next fundraise, expected in early 2027, will clarify whether Champ's structure holds at scale. The brand is unlikely to remain independent past $300 million in revenue, the threshold where Lululemon and Nike begin acquisition conversations. Champ's investors, meanwhile, have a five-year lock-up and no secondary market for their shares. The liquidity event is an exit, not a quarterly mark. That timeline aligns with apparel M&A cycles but tests the patience of athletes accustomed to cash endorsements that clear in 30 days.
The takeaway
Champ's Rhoback stake turns **60** athletes into equity holders, testing whether collective endorsement models generate measurable sales lift before the brand's 2027 raise.
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