I've been made redundant exhibit atenolol 15 mg leave defender Federal prosecutors and law-enforcement officials who used subpoenas and informants to turn clubhouses upside down were involved in the Bonds and Clemens cases. A grand jury began hearing evidence in the Biogenesis case this summer, but for the most part, the evidence in this case has largely been gathered by MLB’s investigators, who have been assisted by Bosch himself. The owner of the now-defunct clinic began cooperating with MLB last spring and is expected to be baseball's chief witness. He will corroborate what baseball insiders believe is an insurmountable mountain of data that shows A-Rod repeatedly violated baseball's joint drug program from 2010 to 2012, sources have told the Daily News.