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 "1978 Oakland Athletics season"): Despite posting a respectable 61-56 mark through 117 games, the Athletics collapsed in the season's final weeks; their 8-37 finish ensured a second consecutive season of fewer than 70 wins.
Relevant evidence: No