John McEnroe as broadcaster talks about the crowd all the time. I only noticed this recently — maybe 30 percent of his commentary involves the crowd. A player needs to rally the crowd. The crowd has turned against someone. The struggling player should try to get the crowd going. The winning player must feed off the energy of the crowd. The crowd is into the match! The crowd really hasn’t gotten into the match! She needs to use the crowd to get to the finish line. He needs to use the crowd to stay in the match. And so on.