A fan is said to have suffered a medical emergency at St. Mary's during the clash between Southampton and Leicester.
The beginning of the second-half was delayed after a supporter collapsed in the stadium.
Amazon Prime, who were covering the game, announced the news live on air as the half-time interval was taking place.
Football commentator Jim Proudfoot, who was at St. Mary's, tweeted: "Thoughts with the Southampton fan who’s taken ill here. They do appear to be conscious - hopefully not as bad as it initially appeared."
The patient is said to be have been taken out onto the concourse, with Amazon saying they did not suffer a cardiac arrest.
However, one supporter at Vicarage Road did in fact suffer a cardiac arrest just moments earlier.
Watford and Chelsea's clash was suspended, with the players taken off the pitch, after a fan collapsed in the stands.
Marcos Alonso was quick to alert medical staff who rushed over to the man in question to offer assistance.
Luckily, Watford General Hospital is merely minutes away from the stadium and the fan has been transported there.
As the players returned to the field, Watford tweeted: "The players have returned to the field in preparation of play resuming.
"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."
Play finally got underway at St. Mary's once again after a long delay.
The fan was taken onto the concourse to receive further treatment.
Medical staff were warmly applauded by supporters as they exited after offering assistance.