It’s almost axiomatic at ESPN: You’re nobody unless you’ve been suspended for saying something you — or perhaps mostly your bosses — regret. Over the years the dishonor roll at the self-styled Worldwide Leader in Sports has been studded with many all-star names. In an era in which media discourse has gotten increasingly coarse, ESPN — of all things, a sports network — stands out for the number of times its leading lights have said or done things that invited disciplinary action. First on the suspension list was Mike Tirico, way back in the 1990s.