Tennis world No.4 Ben Shelton has left sportswear brand On to sign a lucrative contract with New Balance.Shelton has been working with On since 2023, but he has now decided to leave, a month after Kylian Mbappe joined the team.Shelton is ranked fourth in the men’s ATP Tour rankingsGettyIn an exclusive report from Hard Court, it has been revealed that the American superstar will receive multiple incentives. He is expected to pick up substantial ranking bonuses and a signature shoe as part of his fresh New Balance deal.The contract is reported to start from January after On opted not to match New Balance’s offer.Shelton will become the second tennis star on their books, following in the footsteps of women’s World No.4 Coco Gauff. On confirm Shelton departureThe switch has not been officially confirmed, but On revealed that Shelton is departing in a statement to Hard Court.“We are very proud of our partnership with Ben and everything we have achieved together on and off the court over the past four years,” they said.“Athlete partnerships in tennis are and will remain a core pillar of On’s approach. “While we ultimately felt that the proposed terms and structure for continuing the partnership were no longer fit for On, we wish Ben nothing but the very best on his journey.”Shelton lost in the Paris Masters final to Carlos Alcaraz on Sunday, just under a month after losing in the US Open final.The 24-year-old star was beaten by Alexander Zverev, meaning his search for a maiden Grand Slam continued.Shelton will leave On after almost four years to sign for New Balance and join Gauff in their tennis star ranksGettyThe tennis World No.4’s exit comes a few weeks after Real Madrid superstar Mbappe joined On following his departure from NikeGettyOne superstar in, one superstar outShelton will depart On a few weeks after one of the best football players on the planet in Mbappe joined the brand. The Real Madrid and France superstar left Nike and signed with On to become the new face of their football products.He is also a global ambassador, working with their product teams.Speaking about joining the brand, Mbappe said: “From the beginning, what drew me to On was the opportunity to build something entirely new together that will help shape tomorrow’s game. “I want to bring my experience and perspective into what we create, push what’s possible through innovation, and always stay true to the joy of football. “We have a shared dream, and this is only the beginning.”