Sara Errani stands at the baseline and exhales deeply. She is about to hit a second serve, with Italy up match point against Poland. A place in the Billie Jean King Cup final is at stake. So Errani ...

Whether it was Emma Raducanu’s open-mouthed, head-in-hands reaction to a Carlos Alcaraz forehand winner around the net, or Novak Djokovic’s jig following a forehand passing shot of his own, there were ...