Stewart went 1-for-4 with a solo home run in Tuesday's 3-1 loss to the Giants.
Singer (5-12) allowed three runs on six hits, two walks and two hit batsmen while striking out five over 5.2 innings to take the loss versus the Giants on Tuesday.
Liberatore (5-12) took the loss Tuesday against the Orioles, allowing eight runs on eight hits and one walk while striking out seven over four innings.
Myers is not in the lineup Tuesday versus the Giants.
Crooks is absent from the lineup for Tuesday's tilt versus the Orioles.
Jordan is absent from the lineup for Tuesday's game against the Orioles.
The Cardinals recalled Gorman from Triple-A Memphis on Tuesday.
The Cardinals placed Winn on the 10-day injured list Tuesday, retroactive to Aug. 22, due to a left thumb fracture.
The Reds sent Ashcraft (elbow) to Triple-A Louisville to begin a rehab assignment.
Winn (thumb) is expected to be placed on the injured list Tuesday, Jeff Jones of the Belleville News-Democrat reports.
