Is this the reel life? Sports events confront whole new world of social media, influencers

Madonna, Bob Dylan and Jack White have banned phones from their concerts. An exasperated Adele once asked an audience member: “Can you stop filming me? … You can enjoy it in real life rather than through your camera.” In the sporting sphere, however, those bastions of decorum at Augusta National Golf Club are alone in waging war on mobile devices, employing a strict cell phone ban for patrons attending the US Masters. Mark Calcavecchia, the 1989 Open Championship winner and veteran of 18...