In the book, Canseco named several other players, including Mark McGwire, Rafael Palmeiro, Ivan Rodriguez, Juan Gonzalez, and Jason Giambi, as steroid users. The book caused great controversy, and most of these players have claimed Canseco's implications to be false, though McGwire and Giambi have since admitted to using PEDs, and Palmeiro has tested positive.
Canseco released another book, Vindicated, about his frustrations in the aftermath of the publishing of Juiced. In it, he discusses his belief that Alex Rodriguez also used steroids. The claim was eventually proven true with Rodriguez's admission in 2009, just after his name was leaked as being on the list of 103 players who tested positive for banned substances in Major League Baseball. As of July 2013, Alex Rodriguez was again under investigation for using banned substances provided by Biogenesis of America. He was ultimately suspended for the entirety of the 2014 season.
Mark McGwire admitted to using steroids throughout his professional baseball career. The admission of steroid use caused many cases of questioning of whether or not his long list of accomplishments should be rebutted. His most famous accomplishment undoubtedly took place in the 1998 season when he broke the single season home run record previously held by Roger