He takes the spot of Tom Gorzelanny, who will miss at least one turn in the rotation after being hit in the left hand by a line drive against Pittsburgh on Wednesday.
Silva, 10-5 with a 3.92 ERA, has not pitched since Aug. 1. He underwent a surgical procedure called cardiac ablation to correct a problem with his heart rate.
Interim manager Mike Quade says Casey Coleman will start Monday unless he's pressed into relief work.
Copyright 2010 by The Associated Press
Silva attracting interestChicago Cubs’ Carlos Silva out of hospital and on to DL following heart scare
