The Royals activated Kolek (personal) from the family medical emergency list Thursday.
Kolek was placed on the paternity list last week and shifted to the family medical emergency list Tuesday, 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.