LONDON—Maybe the Centre Court spectators were saluting Novak Djokovic’s opponent by saying his name. Maybe they were booing Djokovic, trying to rattle him. The 24-time Grand Slam champion was sure it was the latter—and he let everyone know he was not happy about it.
Djokovic easily beat 15th-seeded Holger Rune 6–3, 6–4, 6–2 in just more than two hours Monday night to reach the Wimbledon quarterfinals, then made sure to get a message across to those fans he thought were against him.
