LeBron’s Manager Leads $100 Million Investment in Youth Sports

Rocket Youth, a startup founded less than a year ago, said it raised more than $100 million from a group led by Maverick Carter — the business manager of NBA superstar LeBron James — as it looks to expand in the booming kids sports sector.

Daniel Sillman, chief executive officer of media firm Relevent Sports that he co-founded with billionaire Stephen Ross, joined Carter. Investment firm ZBS Partners also took part. The valuation wasn’t disclosed.

Rocket Youth sells a suite of services such as accounting and business development to companies running athletic and enrichment programs for kids. The company ...