Perez (eye) took live at-bats at the Royals' alternate site Sunday, Alec Lewis of The Athletic reports.
The left eye blurriness that has kept Perez sidelined since mid-August seems to be improving. The Royals are hopeful that Perez can return from the 10-day injured list at some point next weekend, at which point he would displace Cam Gallagher as the team's everyday catcher.