"Just more of a bruise on his throwing hand," manager Mike Matheny said. "Just one of those things that tightened up to where he couldn't grip the bat or the ball how he needed to, but [we] had him looked at and everything came back negative."
Carpenter's status wasn't as clear. He was slow getting off the field after his at-bat in the bottom of the fifth and was replaced by Kolten Wong. Carpenter just came off the disabled list Friday after missing 24 games with a right lat strain.
"Carp just didn't look right so we made a decision to get him out of there, but he's checking out fine with the medical team," Matheny said.
Carpenter was slow coming off the field after his fifth inning at-bat. Matheny said it looked like he wasn't finishing his swing and he also looked tentative in the field.
"That particular injury is tough to get past the trust factor," Matheny said. "It seemed when he did his rehab everything was fine. We're always on a little ultra on alert just to make sure he doesn't go backwards and if we see something doesn't look quite right, to try and make a move to get ahead of it."
Molina and Carpenter are both considered day to day.
The injuries capped a tough night for the Cardinals, who were victimized by a season-high four homers by the Braves.
Wong grounded out to leave the bases loaded in the sixth and another rally in the eighth was thwarted on a close play at first on a Tommy Pham grounder. Pham was called out on a bang-bang play, which Matheny challenged. After a three-minute, four-second review, the call was upheld.
"I knew it was going to come down to how they interpret whether it was hitting the glove or not," Matheny said. "That's kind of that fine line."