The 10-year National Football League vet shared a photo of himself lying in a hospital bed wearing an oxygen mask and hooked up to various machines and monitors.
According to a post on his Instagram, Haynesworth was hospitalized on July 7 after both his kidneys failed him. He sent a plea for help, reaching out to friends, family and fans for a potential donor.
"It's hard to believe from being a professional athlete to only 8 season in retirement that my body has taken another major blow.", he wrote. "But the bright side of this latest ordeal is I can ask for help".
Haynesworwth said, "If you are interested in giving this precious gift please call Vanderbilt at 615-936-0695".More news: Claims Refuted - Tottenham Hotspur Target Has No Manchester United Agreement
More news: British envoy to USA quits after Trump fury over slight
More news: The Strangest Things from the "Stranger Things" Marketing Campaign
Haynesworth, now 38, played ten seasons after the Titans made him the 15th overall choice in 2002.
He was named to the Pro Bowl twice, and was selected to two first-team All-Pro teams while playing in the NFL. God Bless. Thank you for your prayers and thanks for sharing this message. He parlayed those campaigns into a record-setting, seven-year, $100 million deal with the Washington Redskins in March of 2009. He lasted just two years with the team, a span marked by clashes with coaches, legal issues and accusations of apathy, before he was traded to the New England Patriots for a fifth-round draft pick.
Over his 10-year career, Haynesworth had 347 tackles, 30 1/2 sacks and six forced fumbles.
This isn't the first health problem Haynesworth has faced since leaving the NFL.