It is quite the sound when a tennis ball is pulverised by Alexander Zverev as he serves. There is the crack of racket on ball. The gasps from the crowd. And then the oohs after they glance at the speed gun.
And Taylor Fritz, who had a better view of Zverev’s howitzers than anyone else at Wimbledon on Wednesday, reckons his serve will prove too hot to handle for Arthur Fery in the semi‑final on Friday and possibly anyone else left in the men’s draw.