Randy Moss' son, Thaddeus, is adamant his dad does not have liver cancer ... and he's ripping Larry Fitzgerald Sr. for making the report on Tuesday night.
The father of NFL legend Larry Fitzgerald wrote in a post on X that he had "just heard" about the diagnosis while out in Las Vegas ... and he asked his followers for prayers.
But, just minutes after the elder Fitzgerald -- who is a member of the news media -- pressed send on the post, Thaddeus raced to the comment section to refute the claims.