Kimberley Bell, the former mistress of Barry Bonds, testified at Bonds' perjury trial today, saying that Bonds blamed steroid use on a 1999 elbow injury.

Also testifying was a former clubhouse worker, who said Bonds had to order larger caps. That is purported to be a side effect of steroid use.

More on the story from espn.com

http://sports.espn.go.com/mlb/news/story?id=6266163