"Time," said the chair umpire.
The two players walked into the court and took their places behind the baseline. Nadal turned to the ball boy and caught one of the balls in his racket.
He dribbled the ball and pushed his hair behind the left ear and touched his nose. He pushed the hair behind the right ear and touched his nose again. He dribbled the ball some more and looked at his opponent once before hurling the ball upwards in the air. He waited for it to come down before hitting it hard.
The ball went swirling down the court with a speed imperceptible to the eye. Zverev was astounded. He turned back to look for the ball and asked the line umpire - "Did the ball come from his racket?
She nodded and smiled,
"What was that?" said one of the commentators.
"It was 280km/hr." said another.
"Wow! That's a world record." - said the first commentator.