The former mistress of Barry Bonds testified on Monday that the slugger blamed a 1999 elbow injury on steroid use. Kimberly Bell said that she asked Bonds about the problem with his left elbow, which she described as "a big lump ... it looked awful." She testified that Bonds responded by saying his steroid use caused the injury, because the muscle and tendons grew too fast for the joint to handle. "It blew it," she explained. Bell also said that Bonds talked about the widespread use of steroids among baseball players.