Saggese will start at third base and bat sixth against the Pirates on Monday, John Denton of MLB.com reports.
Saggese wasn't initially in the Cardinals' starting nine, but he's a late addition due to Nolan Arenado being scratched due to an illness and general soreness. Saggese went 2-for-4 with two runs scored, one home run and four RBI across the Cardinals' doubleheader against the Red Sox on Sunday.