A fan is now stable and being treated in hospital after suffering cardiac arrest during Chelsea's game at Watford on Wednesday, with the game delayed while they were treated in the stands at Vicarage Road.
Later on the same evening, Leicester's match at Southampton was also delayed due to a medical emergency in the stands at half-time.
After 13 minutes at Vicarage Road, Chelsea and Watford players were directed to their dressing rooms due to a medical emergency in the crowd. The game was delayed for around 30 minutes, before it resumed following the news that the fan had been taken to hospital.
During a stoppage in play, several players and fans alerted the referee and medical officials of a developing incident in the stands.
A fan had suffered cardiac arrest in the upper tier of the Graham Taylor Stand, with medical officials rushing to attend.
After a delay the fan was taken off on a stretcher, with Watford saying on Twitter that the supporter had been stabilised.
"The players have returned to the field in preparation of play resuming," the club said.
"Our thoughts are with the fan – who had a cardiac arrest but has now been stabilised – and all those affected. Thank you to the medical staff, players and fans for their quick response."
Another medical emergency
Later on the same day, Leicester's match against Southampton at St. Mary's was also delayed due to a medical emergency in the stands.
This time, the incident took place at half-time with the second-half kick-off delayed.
"There will be a delay to kick-off for the second half due to a medical emergency in the stands," read a tweet from Leicester City.
The match was delayed for around 15 minutes before it resumed.
Similar incident at St. James' in October
The incident at Vicarage Road was reminiscent of another emergency with a fan that took place in October's contest between Newcastle and Tottenham.
Play was temporarily stopped during the first half at St. James' Park as a fan was given emergency treatment in the stands.
In that instance the fan was stabilised and taken to hospital, with the game restarted after a delay of 20 minutes.