The former world number two will not face disciplinary action following an investigation into allegations of domestic abuse. An investigation has found there was "insufficient evidence" to substantiate claims made by Zverev's ex-girlfriend Olya Sharypova.
The ATP said there was "insufficient evidence" to substantiate allegations of domestic abuse against Alexander Zverev.
The development comes after the governing body of men's tennis commissioned a 15-month "exhaustive process" investigating allegations of domestic abuse made by Zverev’s former girlfriend, Olya Sharypova.
"While the primary focus of the investigation related to alleged abuses taking place at the ATP Masters 1000 event in Shanghai in 2019, its scope also included purported misconduct in other locations, including Monaco, New York and Geneva, as referenced in public reporting," the ATP said in a press release published on their website.
"The investigation was carried out by The Lake Forest Group (LFG), a third-party investigator, led by founder and chief executive G. Michael Verden and Jennifer Mackovjak," the ATP statement continued.
"LFG conducted extensive interviews with both Sharypova and Zverev, and 24 other individuals including family and friends, tennis players, and other parties involved with the ATP Tour."
"Conflicting statements by Sharypova, Zverev and other interviewees," meant investigators were unable to draw any firm conclusions.
Zverev, meanwhile, hailed the decision in an Instagram post, saying "justice" had "prevailed."
The German, who is currently ranked 14 after an injury-hit 2022 season, said he had denied the "baseless allegations."
"This decision marks a third, neutral, third-party arbiter who has reviewed all relevant information and made a clear and informed decision on this matter in my favour," he said.
"In addition to the ATP's independent investigation, I have also initiated court proceedings in Germany and Russia, both of which I have won."
"I am grateful that this is finally resolved and my priority now is recovering from injury and concentrating on what I love most in this world — tennis."
The ATP said its decision could be "re-evaluated should new evidence come to light."