"He had some numbness throughout the site where he got hit behind the right ear," said Lt. Rick Feinberg of the St. Petersburg Fire-Rescue.
The hospital did not immediately comment on Clement's condition, but Red Sox medical director Dr. Thomas Gill said a CT scan was negative.
"I have spoken with Matt and his doctors in Florida," Gill said. "Matt himself never lost consciousness and is in good spirits. ... He appears to be doing well, but will stay in the hospital for precautionary purposes and will be re-evaluated in the morning."