Canadian boxer Adonis Stevenson remains in "critical condition" with a brain injury and it is premature to speculate about his long-term prognosis, his doctor said on Wednesday.
Stevenson exited the ring via stretcher and was taken to a hospital then placed in a medically induced coma.
Stevenson was dominated nearly from beginning to end by Gvozdyk, who unloaded a barrage of punches that sent the Canadian champion reeling before landing his knockout blow in the 11th.Gvozdyk claimed the belt in his first shot at a major title.
"He suffers from severe traumatic brain injury", Alexis Turgeon told reporters.
According to the hospital, Stevenson's family asked for the doctor to provide an update because it has been inundated with requests, as has Yvon Michel, Stevenson's longtime promoter.
His doctor at the Quebec University Hospital said the boxer had undergone surgery soon after being admitted.
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The hospital said it is too early to comment on his long-term health.
"It's a traumatic brain injury". In the circumstances, his situation is stable but it is critical.
"His condition requires mechanical respiratory support, deep sedation and specialised neurological monitoring".
A statement from the hospital added: "Mr Stevenson's family thanks supporters for their many messages of empathy and support over the past few days".
Stevenson was making his 10th WBC title defence since winning the belt in 2013 by defeating American Chad Dawson and had successfully defended the title against Britain's Tony Bellew.