Miyu Kato and Aldila Sutjiadi were disqualified from the French Open on Sunday after a ball-girl was accidentally hit by a gentle-looking Kato backhand.

The incident happened when the Japanese player and her Indonesian partner were leading 3-1 in the second set after opponents Marie Bouzkova and Sara Sorribes Tormo had claimed the opener.

Standing at the net, Kato gently lobbed a ball in the direction of the ballgirl standing at the opposite end of Court 14 but it hit the youngster on the back of the head.

Kato, 28, immediately apologized to the girl who was crying and shaking. Kato was warned but the supervisor was then called to the court and the pair was disqualified from the third-round match after Bouzkova and Sorribes Tormo had protested to the umpire.

"I did not see it. Our team saw it. But I saw that the girl was still crying for 15 minutes afterwards," said Bouzkova.

"The warning first happened because the umpire did not see that she was crying and she was in that kind of pain. We told the supervisor that he should look more into it because we saw the girl was crying and the ball had gone directly at her. It was not like the ball bounced or was a slower ball. It was in his hands. It was unfortunate, " Bouzkova added.

On Saturday, Russia’s Mirra Andreeva admitted she had been fortunate not to have been defaulted from her match against Coco Gauff after firing a ball petulantly into the crowd on Court Suzanne Lenglen.

“Right after I thought that it was a really stupid move from me, because it was not necessary to do that," admitted a crestfallen Andreeva who was beaten by the American in three sets.

Novak Djokovic was famously defaulted from the 2020 US Open after swatting away a ball in frustration which then speared into a lineswoman standing nearby.