Moustakas (thumb) took batting practice inside the batting cages Monday, Jeffrey Flanagan of MLB.com reports.
Moustakas isn't expected to be back until the end of the month, but he's progressing very well through his recovery process. He just resumed baseball activities Friday, so he's really moving quickly through his rehab. He may need to test his thumb in some rehab games before returning to the Royals, but any information on that should come relatively soon, especially if he continues through his recovery fairly quickly.