Deontay Wilder ended up at the hospital after suffering his first career defeat on Saturday against Tyson Fury in Las Vegas.
Wilder was second-best throughout the fight and wound up on the canvas multiple times.
He stopped on his feet in the seventh round, the end of an aggressive masterclass that Fury produced on Saturday at the MGM Grand Garden Arena.
The American had made 10 defenses of his WBC heavyweight world title before he surrendered the belt to Fury.
Wilder was absent from the post-fight press conference in Las Vegas, and The Athletic reporter Mike Coppinger tweeted that it was because he was sent to “local hospital.”