Here's your Forbes Daily Briefing for Sunday, March 23rd.

Today on Forbes, meet the billionaire March Madness Boosters.

With college sports in their NIL era, or name image and likeness era, it helps to have a big money backer,

the way that Under Armour CEO Kevin Plank, whose estimated net worth is $1 billion,

has bolstered the University of Maryland's athletics department, or the way that David Booth,

who co-founded Dimensional Fund Advisors and is worth $2.5 billion, has donated to his alma mater,

Kansas.

Auburn, the number one overall seed in the NCAA men's basketball tournament bracket,

can tap into the estimated $1.5 billion net worth of Jimmy Rain,

founder of Great Southern Wood Preserving,

which makes decks, fences, and other treated lumber products.

But it's not just powerhouse programs with access to deep pockets.

Body Armor co-founder Mike Rapole, who's worth $1.6 billion, has helped lead a basketball

turnaround at St. John's University, culminating in the program's first Big East tournament

title in 25 years under the Red Storm's second-year

coach, Hall of Famer Rick Petino. Meanwhile, Ryan Smith, co-founder of Enterprise Software Company

Qualtricks and the owner of the NBA's Utah Jazz and the NHL's Utah Hockey Club, has a net worth

estimated at $2.6 billion and supports BYU.

He even pitched in with the recruiting of A.J. DeBanza for next year's team, meeting with the top-ranked

basketball prospect's father and financial advisor, although he later clarified that he didn't

direct any money to DeBanza's NIL package. Still, even those billions look

like chump change next to our list of super-rich superfans, a sweet 16 with a combined net worth

...