Former world number two Alexander Zverev will not face disciplinary action following an investigation into allegations of domestic abuse.
The ATP investigation found there was “insufficient evidence” to substantiate claims made by the German’s former girlfriend Olya Sharypova.
In 2020 she accused Zverev of physical and emotional abuse during their relationship, which he denies.
The ATP decision could be “re-evaluated should new evidence come to light”.
The governing body of men’s professional tennis said it commissioned a private investigation company, the Lake Forest Group, to look into the allegations.
It conducted “extensive interviews with both Sharypova and Zverev” and spoke to 24 other people, including family, friends and players.
The 15-month investigation reviewed text messages, audio files and photos, including material “voluntarily extracted from Zverev’s electronic devices via a third-party forensic expert”.
“Based on a lack of reliable evidence and eyewitness reports, in addition to conflicting statements by Sharypova, Zverev and other interviewees, the investigation was unable to substantiate the allegations of abuse,” the ATP said.