Carpenter is not with the Cardinals in Pittsburgh because he is dealing with "extreme fatigue", MLB.com's Jennifer Langosch reports. Carpenter was out of the lineup Thursday against the Cubs, and he'll now miss an entire weekend series in Pittsburgh. He's presumably dealing with some kind of illness or medical condition, as it would otherwise be quite unusual for a player to miss four straight games due to fatigue. There's no guarantee Carpenter will be ready for Tuesday's game in Cleveland.