The Royals optioned Selby to Triple-A Omaha on Sunday.

The Royals recalled Selby from Triple-A Omaha on Tuesday.

Selby was traded from the Pirates to the Royals on Sunday in exchange for minor-league lefty arm Connor Oliver.

The Pirates designated Selby for assignment Tuesday.

The Pirates optioned Selby to Triple-A Indianapolis on Tuesday.

Selby is listed as Pittsburgh's probable starting pitcher Sunday against the Yankees.

Selby will serve as the Pirates' opening pitcher Tuesday against the Royals.

Selby is being called up to the Pirates' major-league roster Tuesday, Jason Mackey of the Pittsburgh Post-Gazette reports.

Selby (shoulder) tossed a scoreless inning in relief Friday for Triple-A Indianapolis after being reinstated from the 7-day injured list earlier that day.

Pirates director of sports medicine Todd Tomczyk said Wednesday that Selby has been shut down at Triple-A Indianapolis due to a shoulder injury, Jason Mackey of the Pittsburgh Post-Gazette reports.