It certainly panned out for Silva, who is 8-2 with a 3.01 ERA in Chicago after posting a 6.46 ERA in 2008 for Seattle. Bradley, who came to the Mariners in the deal, has hit just .215 with six home runs.
Both Mariners manager Don Wakamatsu and Cubs skipper Lou Piniella said they hope their former players succeed, and Piniella was happy to see Bradley take time off this season for counseling to better himself.
"I'm glad that he's gotten some good help," Piniella said. "I'd like to see Milton do well. He was with us a year in Chicago and did what he could, then he came here to Seattle, and you like to see your ex-players do well. Milton's no exception."
Bradley declined to comment on facing his former squad.
Wakamatsu said he hadn't seen Silva pitch this season, but he had read reports to see what had caused the improvement.
"I think a lot of it is that, especially against left-handers, he's used that changeup a lot," Wakamatsu said. "He's kind of re-invented himself that way, where before he was pitching to contact with his fastball a lot. I think that's where he's found a lot of success this year, using his off-speed, slider and changeup a lot."
Silva was scheduled to face the Mariners on Thursday but will miss the start because of a hamstring injury.