Spurs goalkeeper Brad Friedel says Bafetimbi Gomis' collapse on the pitch brought back memories of Fabrice Muamba's cardiac arrest.
The Swansea strike, like Muamba, fell to the floor at White Hart Lane, but the French striker had merely fainted due to a long-standing medical condition, much to the relief of all those in attendance.
"It went through everyone's mind," the veteran American said. "Anyone who was at that game probably thought the worst immediately.
"It's not normal for someone to be standing there and collapse and you know it's going to be something serious.
"But after a minute or so the word got back, so that's why you didn't see the panic on the players' faces because everyone knew he was all right.
"It was something that had to be dealt with, of course, but it was nothing in the stratosphere of what went on with Fabrice."
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Th Red Devils trail Swansea 2-1 at the Liberty Stadium after 75 minutes, despite taking a first half lead through Ander Herrera.
Swansea chairman Huw Jenkins has insisted any change in the club's ownership will only happen if everyone is in agreement.
The Premier League club had been in talks since the autumn with US billionaire John Jay Moores, the former owner of the San Diego Padres baseball franchise, over investment.
But on Friday evening, ahead of a Swansea City Supporters Trust meeting to discuss the issue, a club spokesman said a deal was "extremely unlikely".
I'm positive that any movement away from the current set-up will only be put in place if everyone connected to our club is convinced it's a good thing for the football club first and foremost.
If not, and this is my opinion, I can see the status quo continuing for some years to come.