Knizner will start at catcher and bat eighth Wednesday against the Brewers, Derrick Goold of the St. Louis Post-Dispatch reports.
Knizner will remain in the lineup for a third straight game while Yadier Molina continues to manage a sore shoulder. With the Cardinals having clinched a wild-card berth, Molina could get a few more days off during the team's final four regular-season contests, so Knizner may receive at least a couple more starts beyond Wednesday.