ROCHESTER, N.Y. — Let’s recall how this began. A week ago, Michael Block was a guy. A very good golfer, sure, but a guy. Really, no different than any of the other 19 club pros competing in the PGA ...

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Block (NYSE: XYZ), formerly known as Square, is probably best known for its small devices that plug into a smartphone to accept credit card payments. That was 15 years ago. Since then, the business ...