Chacon, acquired two weeks ago from the Yankees, lasted 1 2/3 innings Wednesday night against the Houston Astros and was charged with seven runs in what wound up a 14-1 blowout. Manager Jim Tracy said Chacon's first complaint about the knee came after the game.
"You kind of go out there and you have aches and bruises," Chacon said. "It was something that I noticed before - not being able to drive off my back leg. It's something that I need to get addressed.
Chacon had some work done on the knee on friday.
"I'm getting the knee drained today and will get a cortisone shot," Chacon explained. "I could have the surgery done now and it would end my season. They are telling me that I won't hurt it any worse. So I will try to keep it as strong as I can and deal with whatever pain I have to deal with. I can just wait until the end of the season and get it taken care of and not put me behind in any way."
Tracy hasn't not indicated who will take Chacon's start on Monday. Depending on what happens this weekend in the series with St. Louis - it could be Victor Santos or Britt Reames who was just brought up from Triple A Indianapolis.