The Cardinals placed Herrera (knee) on the 10-day injured list Monday.

EDGE Analysis

Herrera tweaked his left knee while running the bases in the first game of Sunday's doubleheader versus the Red Sox. He was diagnosed with inflammation after tests on his knee came back negative, but Herrera has since headed back to St. Louis to be evaluated further before the Cardinals determine how long he might be out. While Herrera is sidelined, Pedro Pages will serve as the Cardinals' primary catcher.