Its a smart move from sport stars to invest their hard earned money in businesses, you can't be a player for all your life and everyone that gets into sports knows its not a life career and you'll be out before you hit 50 for sure.

Investing their money on tech start ups is a win-win for them, for the companies and for the future of their families. I rather see sport stars investing their millions of dolars on companies, helping the economy and other people achieve their dreams than waste them on crazy cars, parties and houses that most end up losing at a later time in their lives, especially if they don't find a good financial floor after retiring from sports.