Following three straight losses that have seen the Cardinals slide the furthest from .500 the team has been all season, general manager John Mozeliak promoted two new faces and one familiar from AAA-Memphis.
Randal Grichuk is back on the roster and starting in left field for Sunday's series finale against the Pirates.
Regular starting center fielder Dexter Fowler has been placed on the 10-day disabled list with what the team called a right heel spur. As a result, Tommy Pham will play center field and Grichuk will take his place in left.
Fowler left Wednesday's game against the Phillies early with what the team called quad tightness.