Sergio Reguilon displayed remarkably quick thinking to alert referee Andre Marriner towards a medical emergency at St James' Park.
At the end of the first half during Spurs' trip to Newcastle, the game was stopped and both players were taken off the pitch while an individual received treatment in the East Stand.
Left-back Reguilon spotted it straight away, sensing that something serious was happening. Meanwhile, teammate Eric Dier sprinted to get a defibrillator taken over to the other side of the pitch by a medic.
Both players received much-deserved praise for their selfless actions, which will hopefully help save the person's life.
After being stabilised, the individual who took ill was then moved from the stands and has been taken to a nearby hospital.
Sky Sports took a break from their in match coverage, with David Ginola speaking eloquently on the situation given he himself had a cardiac arrest on the pitch during a charity game.
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In 2016, the former midfielder was clinically dead for around 8 minutes after collapsing and it was Frederic Mendy who effectively saved his life by performing CPR.
Upon returning to the pitch to play out the final minutes of the half, Reguilon was loudly applauded by the Newcastle fans in a wonderful moment.
Newcastle, in their first game under the new era, went 1-0 up inside two minutes through Callum Wilson but Spurs turned it around with goals from Tanguy Ndombele, Harry Kane and Heung-Min Son.
Featured Image Credit: Image: NBCSNTopics: Newcastle United, Tottenham Hotspur, Sergio Reguilon