Barry Bonds' penchant for turning longtime friends into bitter enemies might come back to hurt him in at least two significant ways at trial. First there's Steve Hoskins. He was once Bonds' closest friend and served as best man at the slugger's first wedding. Then there's Kimberly Bell, the home run king's girlfriend of 10 years, who dated him even after his first wedding. In fact, Hoskins' sister introduced Bell to Bonds after a San Francisco Giants' game in 1994. Each had a nasty falling out with the notoriously prickly slugger, and each is now expected to be a key witness for the prosecution if Bonds goes to trial for perjury and obstruction of justice. He was indicted last week for allegedly lying when he told a federal grand jury he never knowingly used performance enhancing drugs and is likely to face prison time if convicted.