The Royals activated Kolek (personal) from the family medical emergency list Thursday.
Kolek had been on the paternity list and then the family medical emergency list, but he will rejoin the Royals' rotation with a start Thursday against the Rays. The right-hander will be pitching on 10 days' rest, so it's not clear how sharp he will be or how big of a workload he'll be able to handle.