Silva has not pitched for the Cubs since Aug. 1, when he was pulled after four batters because of an abnormal heart rate. He underwent a cardiac ablation on Aug. 9, and has felt better after each throwing session.
"In the beginning, I was a little anxious, but it felt great," Silva said on Monday about his last rehab outing on Friday in Peoria.
He didn't even think about his heart during the 50-pitch outing.
"I just tried to pitch my game," Silva said. "Hopefully, my next game will be here."
The good outing was a relief for Silva, who used to think his rapid heart rate was caused by adrenaline.
"A lot of people tell you you're going to feel better, you're going to feel more energy, and I felt a lot better," Silva said.