Victor Conte, who spent time in prison for distributing steroids, is certain that Giants outfielder Melky Cabreara is far from alone in using performance-enhancing drugs.

"I'm not going to name names," Conte said in an interview with USA Today, "but I've talked to a lot of top players in Major League Baseball, and they tell me this is what they're doing. There is rampant use of synthetic testosterone in Major League Baseball."