Former heavyweight champion and USMC veteran Leon Spinks is in a Las Vegas hospital amid conflicting reports about his condition.
One source told the Daily News Wednesday that the icon was battling a "treatable" underlying illness and expected to go home soon.
Another source said his condition had deteriorated and he was battling pneumonia.
According to TMZ Sports, Spinks, 66, is "fighting for his life."
Attempts to reach a rep for the boxing icon were not immediately successful Wednesday.
"I'm reaching out to ask you to kindly pray for my Beautiful Husband Leon. So that he may overcome the obstacles that have crossed his path," she wrote.
Spinks' wife Brenda posted a Facebook plea for support on Monday.
"It's been a tough year for us. Leon has endured a lot of medical problems," she said in the caption to several smiling photos of Spinks.
Spinks, originally from Missouri, won gold at the 1976 Montreal Olympics. He then shocked the sports world on Feb. 15, 1978 by defeating Muhammad Ali in a split decision in 1978 to win the undisputed heavyweight championship.
The Greatest of All Time got his revenge by beating Spinks by unanimous decision in a rematch on Sept. 15, 1978.
Spinks underwent abdominal surgery in 2014 and has used a wheelchair on and off for the last four years.
This article is written by Nancy Dillon from New York Daily News and was legally licensed via the Tribune Content Agency through the NewsCred publisher network. Please direct all licensing questions to firstname.lastname@example.org.