Kyle Edmund, Britain’s last survivor in the French Open men’s draw, was forced to retire at the start of the third set of his second-round match against Pablo Cuevas on Thursday after calling on the trainer.
The British No 1, trailing 7-6 (3), 6-3, 2-1, indicated on the changeover that he could not continue but did not receive treatment, and left the court.
He had given no indication of injury before his match, but was not moving well against the experienced Argentinian clay-court specialist.
One report said he was suffering from a knee injury, although he might have succumbed to the stomach bug or virus that has already accounted for Kiki Bertens and Kateryna Kozlova, who was originally diagnosed with a rib injury before the Ukrainian was due to play the ninth-seeded Elina Svitolina.
The French Tennis Federation later confirmed Edmund had retired with a knee injury.