The Cardinals recalled King from Triple-A Memphis on Wednesday, Jeff Jones of the Belleville News-Democrat reports.
King was optioned to Triple-A Memphis on Tuesday, Derrick Goold of the St. Louis Post-Dispatch reports.
The Cardinals recalled King from Triple-A Memphis on Sunday.
Cardinals president of baseball operations John Mozeliak said Tuesday they plan to option King to Triple-A Memphis, John Denton of MLB.com reports.
King (illness) was scheduled to face hitters at the Cardinals' spring training complex in Florida on Sunday, Derrick Goold of the St. Louis Post-Dispatch reports.
King will not pitch in Saturday's Grapefruit League game against the Nationals due to an illness, Lynn Worthy of the St. Louis Post-Dispatch reports.
King has allowed five runs on nine hits and three walks while striking out two over three Grapefruit League innings.
King agreed to a one-year contract with the Cardinals on Thursday, avoiding arbitration.
King (1-0) allowed a run on three hits and a walk while striking out one over one inning to earn the win Sunday over the Phillies.
The Cardinals added King to their active roster Tuesday.