hiring Mike Tomlin, an African American man, to be the Steelers’ coach in 2007, and then sticking with him for a decade through seasons both good and bad. The American golfer Lexi Thompson was recently given a four-stroke penalty while leading at the ANA Inspiration tournament. He is, for better and, increasingly, for worse, one of the faces of the league. “That’s across staff, coaches, medics, scientists, referees and the academy system.