Skoglund, 24, is set for his second stint with Kansas City after making his Major League debut May 30 -- a game in which he twirled 6 1/3 scoreless innings. In total, Skoglund posted a 5.59 ERA in his first three starts for the Royals this season.
Skoglund said he took some knowledge back with him to Omaha to work on.
"I think I learned that in terms of my secondary stuff, I have to have more command over it," he said. "I have to try to keep hitters more off-balance."
Skoglund also said he learned to lighten up a little on the field.
"When Danny Duffy came down for a couple of rehab starts," Skoglund said, "you can just tell how he enjoys himself and has fun. I think I was trying to focus too much on things I can't control."