The Royals have called Moustakas' injury a contusion. Gordon went on the disabled list Monday with a fractured bone in his wrist.
Royals manager Ned Yost seemed resigned to not have Moustakas at all during the Twins series, waiting instead for a diagnosis from team physicians in Kansas City.
"The plan was that we'll get back to Kansas City and check him out there," Yost said. "He did say yesterday that he felt better. That's good.
"He took some swings yesterday and felt OK. He's had a little problem moving laterally, so we'll just see when we get back to Kansas City."
Jeffrey Flanagan has covered the Royals since 1991, and for MLB.com since 2015. Follow him on Twitter @FlannyMLB. This story was not subject to the approval of Major League Baseball or its clubs.