Question: What Cuban- American that played during the 1985 Oakland Athletics season , admitted to using performance-enchancing drugs during his playing career in his tell-all book in 2005? 
Sentence (from "Jose Canseco"): Canseco has admitted using performance-enhancing drugs during his playing career, and in 2005 wrote a tell-all book, "", in which he claimed that the vast majority of MLB players use steroids.
Relevant evidence: Yes