Its time to put Geeks against Jocks in this ultimate throw-down of fearless leaders and giants among mankind. In the blue corner, The PayPal Mafia. Descendants of the giant Internet finance company who made it ok to buy from strangers on eBay. In the Red corner, The Bill Walsh Coaching Tree. Descendants of the great Bill Walsh who's San Francisco 49ers dominated the grid iron during the 80's and 90's. Two go in, one comes out the winner in this Infographic brought to you by Hubspot.