Chris Jericho donated $5,000 to Damar Hamlin's GoFundMe page twice after he spelled his name wrong.
Buffalo Bills safety Hamlin had to be resuscitated twice after suffering a cardiac arrest on the field but seems to be 'trending upwards in a positive way', his uncle said.
Hamlin has been in a critical condition in hospital following the incident, that took place during Monday's (2 January) NFL game against the Cincinnati Bengals.
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The 24-year-old had CPR on the field after colliding with Bengals wide receiver Tee Higgins, before being taken to the University of Cincinnati Medical Center.
The on-field emergency has led to an outpouring of well-wishes for Hamlin, and as a sign of their support, people have been donating to Hamlin's GoFundMe page for a toy drive fundraiser.
Among the top donors is wrestler Chris Jericho, who initially donated $5,000 under the name 'Chrus Jericho', before donating an additional $5,000 a few minutes later with the correct spelling.
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All Elite Wrestling - who Jericho is currently signed with - confirmed the donations, according to The Cincinnatti Enquirer.
The fundraiser's initial goal was to reach $2,500, however more than $6,453,000 has been pledged at the time of writing.
Hamlin is now showing 'signs of improvement' but remains in a critical condition in hospital.
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"Damar remains in the ICU in critical condition with signs of improvement noted yesterday and overnight," the Bills said in a brief statement on Wednesday (4 January).
"He is expected to remain under intensive care as his health care team continues to monitor and treat him."
Speaking to CNN outside the Cincinnati Medical Center, where Hamlin is being treated, his uncle Dorrian Glenn said: "His heart had went out so they had to resuscitate him twice.
"They resuscitated him on the field before they brought him to the hospital and then they resuscitated him a second time when they got him to the hospital.
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"I'm not a crier, but I've never cried so hard in my life. Just to know, like, my nephew basically died on the field and they brought him back to life.
"They sedated him just to give a better chance for him to just continue to heal better. We are just taking it day by day. It seems like he's trending upwards in a positive way."
Hamlin was said to be on a ventilator while sedated to help with his breathing.
Bills players and staff were seen praying together on the field as an ambulance took Hamlin to hospital.
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His team-mates were given a standing ovation by fans and NFL commissioner Roger Goodell soon announced that the game had been postponed following the incident.
An NFL update confirmed the fixture will not be finished this week but added that the Bills’ clash against New England Patriots on Sunday is still scheduled to go ahead.