Siani is out of the lineup for Sunday's game against the Guardians.
The left-handed-hitting Siani has now been excluded from the lineup twice during the series with Cleveland, with both absences coming against right-handed starting pitchers. Thomas Saggese cracked the lineup in Siani's stead Friday, but Matt Carpenter will serve as the Cardinals' designated hitter Sunday while Lars Nootbaar slides over from left field to cover Siani's usual spot in center field.