A major court ruling last week enabled sports betting to be legal throughout the United States. It’s a huge change that the NBA was anticipating a decade ago, as I realized while interviewing commissioner David Stern in December 2009. By then Stern had been running the NBA for a quarter-century. He could be sensationally charming, and after so many years on the job he also had a quick temper. I had a series of questions ready for him on a number of topics, and midway through the interview I brought up sports betting. The scandal of Tim Donaghy, who went to prison for betting on NBA games that he had refereed, had been revealed 17 months earlier.