Dustin Pedroia was taken to a nearby hospital after he was hit in the back by a pitch in Sunday night's game between the Boston Red Sox and Houston Astros.
Pedroia had X-rays on his rib area.
"The pitch hit in the left lat area, left rib cage. It continued to swell and tighten up," John Farrell said. "He was losing a lot of range of motion with the left arm, so we had to get him off his feet. We'll have a better read once he goes through the exam here at the local hospital."
Pedroia was the second batter hit by Astros pitcher James Hoyt in the seventh inning. When Pedroia departed, Josh Rutledge moved from third base to second and Pablo Sandoval entered the contest at third.