When two Canadian brothers in their 20s launched DataGolf, they didn't realize just how many questions they'd be asking — and answering in the process. What are the biggest myths among golf fans? How do you pick a winner in a sport as random as golf? Even better, how do you create a model so powerful it can give you predictions and update in real time? Here's how DataGolf became one of the smartest voices in the game. Plus, some PGA Championship picks!