It was 8:55 p.m., the early stages of a hotly anticipated National Football League game, when it seemed as though a run-of-the-mill injury had interrupted the game.“Another Bills player down,” said Joe Buck, the ESPN “Monday Night Football” announcer, not quite sure yet who was on the ground.Mr. Buck soon realized the situation was far more dire. A replay showed that the Buffalo player, Damar Hamlin, had briefly stood up after the tackle and then collapsed, his body going motionless.“We’ve all seen players go down,” Mr. Buck said in an interview on Tuesday. “We’ve seen players get up and then go down. But it was jarring to see the way he fell after he stood up.”Within minutes, ESPN transformed from being a broadcaster of a footbal …
