Merrifield was removed from Tuesday's game against the Rockies after getting hit in the head by a pitch, David O'Brien of The Athletic reports.
Merrifield took a 94-mph fastball off the back of his helmet during the seventh inning of Tuesday's contest. The fact he was able to walk off the field under his own power is a good sign, but Atlanta's medical staff will likely evaluate him for a potential concussion. Luke Williams entered as Merrifield's replacement and could be in line for a start at second base if the 35-year-old needs to miss some time.