Konerko didn't waste any time showing his power stroke is still there.
In his second at-bat of Friday's 4-2 loss, Konerko launched a home run to left against Kansas City right-hander Luis Mendoza. Konerko finished 1-for-4.
"I put some good swings on some balls tonight," Konerko said. "I felt like it was a good night to build on. I felt pretty strong. Sometimes you can take nine or 10 days off and it feels like a couple of months. In some ways, it did. But in some ways, I felt liked I just hopped right back in."
In addition to activating Konerko, the White Sox recalled left-hander Hector Santiago from Triple-A Charlotte. Infielder Orlando Hudson (foot contusion) and left-hander Leyson Septimo (left biceps inflammation) were placed on the 15-day disabled list.
Konerko absorbed the concussion on Aug. 7 when he was elbowed in the side of the head by Kansas City's Jarrod Dyson. Not being ready for the impact, Konerko said, was a key factor.
"I thought I had another half-second or second before the runner would be up on me," Konerko said. "I had no time to brace."
Initially, Konerko said he felt all right, although the lights seemed a little brighter than usual.
"I didn't think much of it," Konerko said. "But the next three days -- Wednesday, Thursday, Friday -- there were all kinds of symptoms that were way out of the ordinary. The lights were so bright, everything was loud. I had headaches for four days and that was actually the easiest part."
By last Sunday, Konerko said he felt more like himself.
"The first three days afterwards, it's depressing," Konerko said. "You feel so depressed and unmotivated to do anything. You have no energy. But Sunday was the first day I felt a little more spring in my step."
Konerko said he'll be ready to play in the field whenever manager Robin Ventura is ready to write his name in as the first baseman. Adam Dunn started again at first base on Friday.
"I just want to see how it goes," Ventura said. "You can make adjustments more if he's the designated hitter instead of the first baseman. We'll get him in there and re-acclimate him. He'll play first at some point."