Radwan Hamed has won his High Court damages case after suffering a heart attack while playing for Tottenham's youth team.
Hamed, who was 17 at the time and had signed a professional terms just three days prior to suffering a cardia arrest in a match against Cercle Brugge in Belgium in August 2006.
The incident was similar to the one Fabrice Muambe suffered at White Hart Lane in 2012, however Hamed suffered catastrophic brain damage.
Mr Hamed's father, Raymon, claimed that his injuries resulted from the negligence of Dr Peter Mills, a cardiologist who screened his son, and of the club - through Dr Charlotte Cowie and Dr Mark Curtin, specialist sports physicians it employed.
Mr Justice Hickinbottom ruled Tottenham to be 70 per cent liable and Dr Mills the remaining 30 per cent, ruling that Dr Cowie made a serious error of judgment when she concluded that the teenager bore no risk of an adversecardiac event.
"On any view, this was tragedy writ large," said Mr Justice Hickinbottom in London, as he ruled on the issue of liability.
Compensation has yet to be set, but could reach £7 million
A Tottenham spokesman said; "The club wholeheartedly regrets that a former employee, as adjudged, was remiss in their duties to Radwan.
"This judgment will hopefully now secure the best possible treatment and care for him. The club has been supportive of Radwan and his family over the past 10 years and we wish them well for the future."
A statement from Hamed's legal representative, Diane Rostron, medical negligence partner at Linder Myers Solicitors, read: “My client suffered catastrophic brain damage as a result of a cardiac arrest which today’s judgement confirmed was entirely avoidable.
“The FA has a screening programme which requires that clubs ensure their young players undergo tests for cardiac conditions such as the silent, and well-documented, life threatening heart condition hypertrophic cardiomyopathy (HCM).
“Both the doctors employed and instructed by Spurs failed in their duty of care to Radwan with devastating results.
“Radwan and his parents were not even given the privilege of knowing that his test results had been returned showing abnormal results. Had they been afforded the right to this crucial information, Rad would not have continued playing.
“Instead, specialist doctors told his parents that there was nothing to worry about and he sadly collapsed having suffered a cardiac arrest just 11 months later.
Today’s judgement serves as a clear message to all sporting organisations. Radwan Hamed is lucky to be alive.”