American boxer Patrick Day died on Wednesday in Chicago as a result of the traumatic brain injury he suffered during his fight on Saturday, where he was knocked out by Charles Conwell in the 10th round.

Day, 27, had been in a coma for four days following his defeat and, despite having emergency brain surgery at Northwestern Memorial Hospital, doctors were unable to save the junior middleweight.

"Patrick Day passed away today, October 16, 2019, succumbing to the traumatic brain injury he suffered in his fight this past Saturday, October 12, at the Wintrust Arena in Chicago, IL," his promoter Lou DiBella said in a statement

"He was surrounded by his family, close friends and members of his boxing team, including his mentor, friend and trainer Joe Higgins."

"On behalf of Patrick's family, team, and those closest to him, we are grateful for the prayers, expressions of support and outpouring of love for Pat that have been so obvious since his injury."

Day was rushed to the hospital on a stretcher after Conwell landed a flurry of punches that left him motionless on the canvas.

Before turning professional, Day was a highly decorated amateur who won two nationals titles.

He turned pro in 2013 and became a world-rated super welterweight contender, capturing the WBC Continental Americas championship in 2017 and the IBF Intercontinental championship in 2019. In June he was rated in the top-10 by both the WBC and IBF.

Day's death comes after 23-year-old Argentine super lightweight Hugo Santillan died in July from injuries suffered in the ring and 28-year-old Russian Maxim Dadashev passed away two days earlier from brain injuries during his fight.

"It becomes very difficult to explain away or justify the dangers of boxing at a time like this," DiBella said.

"This is not a time where edicts or pronouncements are appropriate, or the answers are readily available. It is, however, a time for a call to action.

"While we don't have the answers, we certainly know many of the questions, have the means to answer them and have the opportunity to respond responsibly and accordingly and make boxing safer for all who participate.

"This is a way we can honour the legacy of Pat Day. Many people live much longer than Patrick's 27 years, wondering if they made a difference or positively affected their world. This was not the case for Patrick Day when he left us.

"Rest in peace and power, Pat, with the angels."

American boxer Patrick Day died on Wednesday in Chicago as a result of the traumatic brain injury he suffered during his fight on Saturday, where he was knocked out by Charles Conwell in the 10th round.

American boxer Patrick Day died on Wednesday in Chicago as a result of the traumatic brain injury he suffered during his fight on Saturday, where he was knocked out by Charles Conwell in the 10th round. Day, 27, had been in a coma for four days following his defeat and, despite having emergency brain surgery at Northwestern Memorial Hospital, doctors were unable to save the junior middleweight. "Patrick Day passed away today, October 16, 2019, succumbing to the traumatic brain injury he suffered in his fight this past Saturday, October 12, at the Wintrust Arena in Chicago, IL," his promoter Lou DiBella said in a statement "He was surrounded by his family, close friends and members of his boxing team, including his mentor, friend and trainer Joe Higgins." "On behalf of Patrick's family, team, and those closest to him, we are grateful for the prayers, expressions of support and outpouring of love for Pat that have been so obvious since his injury." Day was rushed to the hospital on a stretcher after Conwell landed a flurry of punches that left him motionless on the canvas. Before turning professional, Day was a highly decorated amateur who won two nationals titles. He turned pro in 2013 and became a world-rated super welterweight contender, capturing the WBC Continental Americas championship in 2017 and the IBF Intercontinental championship in 2019. In June he was rated in the top-10 by both the WBC and IBF. Day's death comes after 23-year-old Argentine super lightweight Hugo Santillan died in July from injuries suffered in the ring and 28-year-old Russian Maxim Dadashev passed away two days earlier from brain injuries during his fight. "It becomes very difficult to explain away or justify the dangers of boxing at a time like this," DiBella said. "This is not a time where edicts or pronouncements are appropriate, or the answers are readily available. It is, however, a time for a call to action. "While we don't have the answers, we certainly know many of the questions, have the means to answer them and have the opportunity to respond responsibly and accordingly and make boxing safer for all who participate. "This is a way we can honour the legacy of Pat Day. Many people live much longer than Patrick's 27 years, wondering if they made a difference or positively affected their world. This was not the case for Patrick Day when he left us. "Rest in peace and power, Pat, with the angels."

American boxer Patrick Day dies following brutal knockout

American boxer Patrick Day was <a href="https://www.wionews.com/sports/us-fighter-patrick-day-in-coma-after-vicious-knockout-report-255589">fighting for his life</a> in critical condition in hospital on Sunday night after lapsing into a coma following a vicious knockout by Charles Conwell the night before.

The 27-year-old Day suffered a "traumatic injury" and underwent emergency brain surgery Saturday night after being knocked out by Conwell in a super welterweight bout on the card at Chicago's Winstrust Arena.

"Patrick is in a coma caused by the injury and is in extremely critical condition," said fight promoter Lou DiBella. "We appreciate the outpouring of support, prayers and offers of assistance from all corners of the boxing community."

Day is in intensive care in Northwestern Memorial hospital. No specific details of Day's injuries were provided by the promoter.

Conwell asked his social media followers to pray for Day's recovery. "Keep him in your prayers!! #prayforpatrickday," he wrote on his Twitter page.&nbsp;

"Pat Day makes any room he is in a better place. Never saw him greet someone without a big smile," DiBella wrote on Twitter. "Life doesn't seem fair sometimes. Please keep Pat in your prayers, thoughts and hearts."

Day was unconscious when he was taken from the ring in a stretcher and loaded onto a waiting ambulance. He suffered a seizure in the ambulance and needed a breathing tube once he arrived at the hospital.

Conwell, a 2016 American Olympian, was dominating the fight dropping Day in the fourth and eighth rounds and then landing a right hand in the 10th which caused Day to stumble.&nbsp;

Seconds later he rocked Day with a massive left hook that resulted in Day falling backwards and his head bouncing off the canvas. Referee Celestino Ruiz called off the fight at one minute, 46 seconds of the round.

Day lay on the canvas for several minutes while receiving medical treatment before being removed from the ring.&nbsp;

Day was coming off a loss in June to Carlos Adames in New York. He has 17 wins and four losses and one draw in his pro career which began in 2013.

Day was fighting on the undercard of Russian Dmitry Bivol's successful World Boxing Association light-heavyweight world title defence over Lenin Castillo.

American boxer Patrick Day was fighting for his life in critical condition in hospital on Sunday night after lapsing into a coma following a vicious knockout by Charles Conwell the night before.

American boxer Patrick Day was fighting for his life in critical condition in hospital on Sunday night after lapsing into a coma following a vicious knockout by Charles Conwell the night before. The 27-year-old Day suffered a "traumatic injury" and underwent emergency brain surgery Saturday night after being knocked out by Conwell in a super welterweight bout on the card at Chicago's Winstrust Arena. "Patrick is in a coma caused by the injury and is in extremely critical condition," said fight promoter Lou DiBella. "We appreciate the outpouring of support, prayers and offers of assistance from all corners of the boxing community." Day is in intensive care in Northwestern Memorial hospital. No specific details of Day's injuries were provided by the promoter. Conwell asked his social media followers to pray for Day's recovery. "Keep him in your prayers!! #prayforpatrickday," he wrote on his Twitter page. "Pat Day makes any room he is in a better place. Never saw him greet someone without a big smile," DiBella wrote on Twitter. "Life doesn't seem fair sometimes. Please keep Pat in your prayers, thoughts and hearts." Day was unconscious when he was taken from the ring in a stretcher and loaded onto a waiting ambulance. He suffered a seizure in the ambulance and needed a breathing tube once he arrived at the hospital. Conwell, a 2016 American Olympian, was dominating the fight dropping Day in the fourth and eighth rounds and then landing a right hand in the 10th which caused Day to stumble. Seconds later he rocked Day with a massive left hook that resulted in Day falling backwards and his head bouncing off the canvas. Referee Celestino Ruiz called off the fight at one minute, 46 seconds of the round. Day lay on the canvas for several minutes while receiving medical treatment before being removed from the ring. Day was coming off a loss in June to Carlos Adames in New York. He has 17 wins and four losses and one draw in his pro career which began in 2013. Day was fighting on the undercard of Russian Dmitry Bivol's successful World Boxing Association light-heavyweight world title defence over Lenin Castillo.

US boxer Patrick Day 'extremely critical' after devastating knockout

American Patrick Day was in a coma after suffering a <a href="https://www.wionews.com/sports/us-fighter-patrick-day-hospitalized-after-big-knockout-by-charles-conwell-255546">serious head injury</a> Saturday night following a vicious knockout by unbeaten Charles Conwell during a boxing card in Chicago, US media reported.

The 27-year-old Day was unconscious when he was taken from the ring in a stretcher and loaded onto a waiting ambulance at the Wintrust Arena. Fight broadcaster DAZN said Day suffered a seizure in the ambulance and needed a breathing tube once he arrived at the hospital.

US sports broadcaster ESPN reported that Day had emergency brain surgery and went into a coma, but did not say whether he fell into the coma or it was induced by the doctors.&nbsp;

No details of the head injury were given and the promoter, Matchroom Boxing, did not issue a statement on Saturday night other than to say Day was transported to a local hospital.

"Please pray for Pat!! Come home safe!," Conwell wrote on his social media Twitter account following the fight.

Conwell, a 2016 American Olympian, was dominating the super welterweight fight dropping Day in the fourth and eighth rounds and then landed a right hand in the 10th which caused Day to stumble.&nbsp;

Seconds later he rocked Day with a massive left hook that resulted in Day falling backwards and his head bouncing off the canvas. Referee Celestino Ruiz called off the fight at one minute, 46 seconds of the round.

Day lay on the canvas for several minutes while receiving medical treatment before being removed from the ring.&nbsp;

Day was coming off a loss in June to Carlos Adames in New York. He has 17 wins and four losses and one draw in his pro career which began in 2013.

Day was fighting on the undercard of Russian Dmitry Bivol's World Boxing Association light-heavyweight world title defence against Lenin Castillo.

American Patrick Day was in a coma after suffering a serious head injury Saturday night following a vicious knockout by unbeaten Charles Conwell during a boxing card in Chicago, US media reported.

American Patrick Day was in a coma after suffering a serious head injury Saturday night following a vicious knockout by unbeaten Charles Conwell during a boxing card in Chicago, US media reported. The 27-year-old Day was unconscious when he was taken from the ring in a stretcher and loaded onto a waiting ambulance at the Wintrust Arena. Fight broadcaster DAZN said Day suffered a seizure in the ambulance and needed a breathing tube once he arrived at the hospital. US sports broadcaster ESPN reported that Day had emergency brain surgery and went into a coma, but did not say whether he fell into the coma or it was induced by the doctors. No details of the head injury were given and the promoter, Matchroom Boxing, did not issue a statement on Saturday night other than to say Day was transported to a local hospital. "Please pray for Pat!! Come home safe!," Conwell wrote on his social media Twitter account following the fight. Conwell, a 2016 American Olympian, was dominating the super welterweight fight dropping Day in the fourth and eighth rounds and then landed a right hand in the 10th which caused Day to stumble. Seconds later he rocked Day with a massive left hook that resulted in Day falling backwards and his head bouncing off the canvas. Referee Celestino Ruiz called off the fight at one minute, 46 seconds of the round. Day lay on the canvas for several minutes while receiving medical treatment before being removed from the ring. Day was coming off a loss in June to Carlos Adames in New York. He has 17 wins and four losses and one draw in his pro career which began in 2013. Day was fighting on the undercard of Russian Dmitry Bivol's World Boxing Association light-heavyweight world title defence against Lenin Castillo.

US fighter Patrick Day in coma after vicious knockout: Report

US fighter Patrick Day was <a href="https://www.wionews.com/sports/russian-boxer-maxim-dadashev-dies-after-fight-238026">hospitalized after a brutal knockout</a> by unbeaten Charles Conwell in a super welterweight bout in Chicago on Saturday.

Fight broadcaster DAZN reported Day, who was taken from the ring on a stretcher, did not regain consciousness before leaving the Wintrust Arena and had a seizure as he was put in an ambulance.

Conwell had dropped 27-year-old Day in the fourth and eighth rounds and knocked him out with a massive left hook in the 10th round.

The fight was on the undercard of Russian Dmitry Bivol's World Boxing Association light-heavyweight world title defence against Lenin Castillo.

The co-feature on the card is former undisputed cruiserweight champion Oleksandr Usyk's heavyweight debut against Chazz Witherspoon.

US fighter Patrick Day was hospitalized after a brutal knockout by unbeaten Charles Conwell in a super welterweight bout in Chicago on Saturday. Fight broadcaster DAZN reported Day, who was taken from the ring on a stretcher, did not regain consciousness before leaving the Wintrust Arena and had a seizure as he was put in an ambulance.

US fighter Patrick Day was hospitalized after a brutal knockout by unbeaten Charles Conwell in a super welterweight bout in Chicago on Saturday. Fight broadcaster DAZN reported Day, who was taken from the ring on a stretcher, did not regain consciousness before leaving the Wintrust Arena and had a seizure as he was put in an ambulance. Conwell had dropped 27-year-old Day in the fourth and eighth rounds and knocked him out with a massive left hook in the 10th round. The fight was on the undercard of Russian Dmitry Bivol's World Boxing Association light-heavyweight world title defence against Lenin Castillo. The co-feature on the card is former undisputed cruiserweight champion Oleksandr Usyk's heavyweight debut against Chazz Witherspoon.

US fighter Patrick Day hospitalized after knockout by Charles Conwell

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American boxer Patrick Day dies following brutal knockout

US boxer Patrick Day 'extremely critical' after devastating knockout

US fighter Patrick Day in coma after vicious knockout: Report

US fighter Patrick Day hospitalized after knockout by Charles Conwell