A decade ago, luxury car keys, six-figure watch deals, and private-jet ambassadorships in tennis belonged almost exclusively to "The Big Three" (Roger Federer, Rafael Nadal, and Novak Djokovic). Although one has yet to retire, that era is closing. As the sport searches for its next commercial center of gravity, brands have already made their picks: Coco Gauff and Carlos Alcaraz.Worth Far More Than Prize MoneyThe numbers tell the story before any highlight reel does. Gauff entered 2026 as the world’s highest-paid female athlete for the third straight year, with an estimated $31 million in total earnings, according to Sportico. Only about $8 million of that came from prize money. The other $23 million arrived off the court.Alcaraz sits in similar territory on the men’s side. Multiple outlets, including Forbes, place his annual endorsement and appearance income at roughly $35 million, on top of the more than $60 million he has collected in career prize money.Why Brands Are Buying InThe appeal of both players is similar and straightforward. They are young, passionate, highly marketable, and carry the kind of crossover charisma that reaches well beyond tennis' target audience. Also, brands are not shy about comparing these new phenoms to their predecessors.When Mercedes-Benz named Gauff a global ambassador in December of 2025, it placed her in an ad alongside Federer, who held the same role for the German automaker for more than a decade. Alcaraz, meanwhile, has followed in both Federer and Nadal's footsteps by fronting Louis Vuitton campaigns and receiving a personalized signature logo line from Nike.Two Different PortfoliosEven if their appeal is similar, the two players have constructed two very different portfolios. Gauff's sponsorships range from New Balance, Rolex, Bose, and Head to Barilla, UPS, Emirates, Microsoft, Meta, and, as of late 2025, Mercedes-Benz (a switch from her previous partnership with BMW). She has also stepped further into fashion by collaborating with Miu Miu on a New Balance tennis-inspired apparel collection.Alcaraz, meanwhile, has built a narrower and more luxury-forward portfolio. His stable includes a 10-year Nike deal as well as sponsorships with Rolex, BMW, Babolat, and Calvin Klein. The young Spanish player also signed a multi-year partnership with tech company Infosys to become their Global Brand Ambassor while they build a custom performance app for Alcaraz and his coaching team.What Comes NextThe ceiling may be higher still for both players in the coming years. Elite endorsement contracts are stacked with milestone escalators, and some industry watchers have already projected Alcaraz to boost his annual off-court income after completing his career Grand Slam. Gauff, now steering her own management company in Coco Gauff Enterprises, also continues to grow and has more control than ever over where her brand goes next.The open question is whether anyone else can break into this exclusive financial tier. Jannik Sinner, Aryna Sabalenka, and even rising names like Alex Eala all have their own commercial upsides. In terms of prize money, Sinner is already there, running neck and neck with Alcaraz in annual earnings. For now, though, the race has two clear frontrunners, and the brands have already placed their bets.Add us as a preferred source on GoogleFollow