"Holly woke up this morning with a stiff neck," manager Ned Yost said. "The trainers worked on him during the game and it got better."
Holland has not pitched since last Thursday night, and he did not close out the Royals' shutout win over the Yankees on Sunday, but that was not a save situation.
Yost said Holland has not experienced neck issues before Monday night.
"We'll just see how he is tomorrow," Yost said, "and go from there."
Jeffrey Flanagan is a reporter for MLB.com. Follow him on Twitter at @FlannyMLB. This story was not subject to the approval of Major League Baseball or its clubs.