It was determined that Sinner was not at fault or negligent for the positive tests.

The ITIA described the levels found in Sinner’s sample as “low”. His lawyers said it amounted to “less than a billionth of a gram”.

The full decision, published by the ITIA,, external states that on March 3, Naldi cut the finger of his left hand on a scalpel in his medical bag.

Naldi bandaged the cut and took it out two days later. Umberto Ferrara, Sinner’s fitness coach, advised the physiotherapist to use a medical spray that Ferrara had bought at an Italian pharmacy in February on the cut.

The physical therapist said he had not checked the contents of the spray, which he used every morning from March 5 to 13 (Indian Wells took place from March 6 to 17).

Between those dates, Naldi Sinner gave full-body massages and bandaged his feet. He did not wear gloves while performing the treatments.

Sinner stated that he suffers from a skin condition on his feet and back that causes him to scratch frequently and can cause minor cuts and injuries on the affected areas.

On the morning of March 10, Naldi treated Sinner’s feet and ankle. He said he applied the spray twice that morning and that he “doesn’t remember” washing his hands between spraying his finger and treating Sinner’s feet.

Sinner and his team fully cooperated with the investigation.

The ITIA acknowledged that Sinner had no knowledge of the spray or that it contained a prohibited substance, nor did he know that Naldi had used the spray on his cut finger.

Three independent experts also concluded that Sinner’s explanation was plausible. One of them stated that the amount administered “would not have had any relevant doping or performance-enhancing effect on the player”.

The ITIA found that there was no intentional breach and subsequently referred the case to an independent tribunal to determine “what, if any, fault the player was at fault and what the appropriate outcome was”.

The independent court subsequently ruled that there was no fault or negligence, meaning the 23-year-old was not suspended.

However, he will lose his 400 ranking points and the $325,000 prize money from Indian Wells.

The ruling is subject to possible appeal to Wada.