Sergio Ramos reportedly tested positive for a banned substance after Real Madrid's triumph over Juventus in the 2017 Champions League final.

The latest revelation from Football Leaks claims the Spanish defender provided a urine sample after the award ceremony in Wales, which was turned over to the Seibersdorf laboratory in Vienna, Austria where it was later revealed that Ramos had tested positive for dexamethasone.

According to Friday's report from Der Spiegel, dexamethasone is "a cortisone preparation that has an anti-inflammatory effect in addition to relieving pain. It also increases cognition and concentration and can have a euphoric effect. And it is on the list kept by the World Anti-Doping Agency (WADA) of substances that are prohibited in competition."

The discovery of the failed sample was never made public and the case file remains classified at UEFA's headquarters, according to Der Spiegel.

Ramos was never disciplined. He was, however, contacted by a member of UEFA's anti-doping unit and was asked to provide an explanation in July 2017.

The player replied on July 10, addressing the UEFA employee by her first name. It was a brief statement of just four lines. The Real Madrid team doctor, he wrote, had treated him on the day before the game. All additional details, he noted, were elucidated in an attached 'medical report' that the doctor had prepared. "I hope this fully clarifies the situation," Ramos concluded.

The center-back never listed the substance when he filled out a form asking which medications he took in the week leading up to the final. Instead, he stated he received an injection in his knee and shoulder which contained another substance banned by WADA, Celestone Chronodose.

Ramos' doctor took the blame for injecting him with dexamethasone, and the defender later explained he did not disclose the drug on the medical form because of the euphoria he experienced after winning the Champions League final with Real Madrid.

Dr. A also explained that it was "human error," and that Ramos never intended to breach the rules regarding doping.

The doctor's statement was apparently well received in UEFA's anti-doping unit. According to the response sent to Sergio Ramos and Real Madrid, the association consulted an "expert" who confirmed that two intravenous injections of 1.2 milliliters of dexamethasone would produce the rough equivalent of the dexamethasone concentration found in the sample of the player's urine. UEFA took note of the club's explanation. It was "very likely" that the player and the doctor had committed "an administrative mistake."

UEFA eventually closed the case but urged Ramos and Dr. A to use more caution in the future.

According to Der Spiegel, then-Real Madrid superstar Cristiano Ronaldo voiced his complaints about the frequency at which he was asked to provide samples to UEFA's anti-doping unit. This caused "tension" that caused UEFA-appointed physicians to allow Real Madrid medical staff to intervene and insist on testing the players themselves.

Real Madrid issued a statement, responding to Der Spiegel's report:

With regards to the reports published by Der Spiegel in relation to our captain, Sergio Ramos, the club wishes to express the following:

1. Sergio Ramos has never breached anti-doping regulations.

2. UEFA requested specific information and immediately closed the case referred to, as is customary in such instances, following tests carried out by experts from the World Anti-Doping Association (WADA) and UEFA itself.

3. In terms of the rest of the content published by the aforementioned publication, the club will not be making any comment, given the clearly insubstantial nature of the reports.

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