The Astros recalled King from Triple-A Sugar Land on Friday, Chandler Rome of The Athletic reports.
The Astros placed Okert on the 15-day injured list Friday with a right hamstring strain, Chandler Rome of The Athletic reports.
Urquidy gave up one hit over a scoreless inning of relief in Thursday's 6-2 loss to the Astros.
Fedde is slated to start Friday's game against the Twins at Rate Field, James Fegan of the Chicago Sun-Times reports.
The White Sox optioned Romo to Triple-A Charlotte on Friday.
The White Sox activated Teel (ankle) from the 10-day injured list Friday.
Castillo (4-11) took the loss Thursday against the Astros, allowing six runs on six hits and two walks over four innings. He struck out three.
Brown (5-3) earned the win Thursday over the White Sox, allowing two runs on six hits and two walks over six innings. He struck out seven.
Gilbert cleared waivers Thursday and was sent outright to Triple-A Charlotte, James Fegan of the Chicago Sun-Times reports.
Smith is absent from the lineup for Thursday's game versus the White Sox.
