Wainwright (back) could miss just one start after being placed on the 10-day disabled list Tuesday, Alaina Getezenberg of MLB.com reports.
The Cardinals have already ruled out the veteran starter for this weekend's series against the D-Backs, but manager Mike Matheny remains optimistic he'll be back in time for next week's series with Milwaukee. "We knew [the injury] was kind of there, through we might be getting ahead and it's tightening up on him," the skipper said. Luke Weaver is expected to be recalled to take Wainwright's temporarily vacant spot in the rotation.