Alexander Zverev said he has tested negative for Covid-19 a day after stating he should not have played his fourth-round match against Jannik Sinner at the French Open.
Zverev, 23, presented a copy of his new test result in a social media post.
The US Open finalist wrote: "I wasn't 100% yesterday and will take a few days to recover."
Zverev previously said he was up-to-date with his tournament-organised Covid-19 tests, with his last one on 29 September.
The German had told reporters he had a temperature of 38 Celsius during the night after his third-round match against Marco Cecchinato on Friday.
A French Tennis Federation (FFT) statement said Zverev had not consulted the tournament doctors about his symptoms before his match against Sinner.