Barry Bonds' trainer asked a federal appeals court on Monday to allow him to leave prison on bail nearly a week after a judge ordered him locked up for refusing to testify to a grand jury investigating the Giants slugger. Greg Anderson, who served three months in prison after pleading guilty last year for his role in the BALCO steroid scandal, was held in contempt of court last week and taken to prison. At that time, Judge William Alsup denied Anderson's plea for bail, ruling that granting such a request would defeat the purpose of jailing the trainer to compel him to testify. On Monday, Anderson's attorney Mark Geragos asked the 9th U.S. Circuit Court of Appeals to overturn Alsup's ruling and set Anderson free.