In 2012, PayPal sold to eBay for $1.5 billion, creating one of the most successful groups of entrepreneurs and investors ever seen. Known as "The PayPal Mafia", they've led and created companies such as YouTube, LinkedIn, Yelp, Tesla, Square, Yammer, 500 startups, and more. In the NFL, there's a legendary parallel: Hall of Famer Bill Walsh's "Coaching Tree." Walsh's coaching staff produced many of the most successful head coaches in the history of the NFL. Walsh's understudies not only won multiple championships but changed the game itself.
Infographic by: hubspot.com