Kolek won't be available to make his scheduled start Friday against the White Sox and is expected to be placed on the paternity list prior to the contest, Joel Goldberg of Bally Sports Kansas City reports.
Once he's officially placed on the list, Kolek will be away from the club for the next 1-to-3 days, by rule. He could rejoin the team this weekend to make a start against the White Sox, though the Royals might also opt to just skip the right-hander's turn through the rotation. Kolek is coming off his worst start of the season, having allowed nine runs over 1.2 innings in a loss to the Cardinals last Sunday.