The parents of “Jeopardy!” contestant Brayden Smith, who died last year at age 24, are suing the hospital where he underwent surgery prior to his death, which a malpractice lawsuit claims was “preventable.”

Smith became a favourite with fans during his five-game winning streak as one of the final contestants to be hosted by Alex Trebek. Trebek died in November 2020; his final episode aired on Jan. 8, 2021.

READ MORE: ‘Jeopardy!’ Contestant Brayden Smith Dead At 24

Smith’s mother Debbie confirmed that her son had died in a tweet she issued last February, without revealing the cause of death.

Now, she and husband Scott Smith have launched a lawsuit, listing Nevada physicians Godwin Ofikwu and Irfana Razzaq, as well as Dignity Health and St. Rose Dominican Hospital – San Martin Campus, as defendants.

“His last days were a nightmare. His death was preordained by the misconduct of doctors and nurses. None of this had to be,” reads the Jan. 11 lawsuit, obtained by E! News.

According to the suit, Brayden underwent surgery to remove his colon on Jan. 15, 2021, but “was never given heparin or anticoagulants post-surgery, which was below the standard of care.”

READ MORE: ‘Jeopardy!’ Pays Tribute To Late Five Time Champ Brayden Smith

The suit alleges that the medication would have prevented the pulmonary embolism — a type of blood clot — that contributed to his death on Feb. 5, 2021.

In addition, the suit claims that he “suffered severe and extreme physical pain and suffering prior to his death,” which was “a direct and proximate result of the negligence of [the] Defendants.” Added the filing, “This is a very sad case about a young man whose death was preventable.”

Robert E. Murdock, attorney for the Smith family, told E! News, “Had a doctor or a nurse checked to make sure anticoagulants were actually ordered and given, Brayden would be alive.”

READ MORE: ‘Jeopardy!’ Champion Brayden Smith Says Spending Time With Alex Trebek Was The ‘Best Part’ Of Being On The Show

“But this case is not just about death,” he continued. “Brayden suffered before he died because the hospital, its nurses, and the home health nurse, failed to teach and take care of this young man with a new ostomy.”

The Scotts are suing for damages and legal fees, noting that they’ve incurred expenses for their son’s medical care, treatment, and funeral costs, in addition to experiencing “emotional distress and pain and suffering as a result of the untimely death of their son.”