Molina sustained the injury on an awkward slide into first base in the fourth inning of Wednesday's win. The play unfolded as if it would be a routine groundout, but Rockies shortstop Josh Rutledge lobbed his throw to first base, which forced first baseman Tyler Colvin into the basepath.
In an attempt to avoid Colvin's tag, Molina ducked into an awkward slide into the bag. He was out on the play and sprained his thumb in the process. Molina remained in the game, but his thumb was sore and still swollen more than 24 hours later.
Molina is scheduled to have his thumb X-rayed in St. Louis on Friday. Asked if he expects to find out if he suffered any type of break, Molina shook his head.
"I don't know," he said. "What I feel feels weird. I don't feel good. I don't feel bad. Just weird. Hopefully it's nothing serious, but the way I feel is weird."
Molina added that the biggest concern right now is how much of an effect that thumb will have on his ability to grip a ball. It is not so much an issue on his swing, as is evident by the fact that he tallied two hits on Wednesday after sustaining the injury.