Johnson sustained multiple orbital bone fractures on the left side of his face when he was struck Saturday. Red Sox spokeswoman Pam Ganley says Johnson was taken to a hospital and was resting comfortably. There were no signs of a concussion.

The 21-year-old left-hander from the University of Florida was selected by Boston with the 31st and final pick of the first round of the amateur draft, a compensation pick awarded to the Red Sox for losing closer Jonathan Papelbon in free agency. Johnson has not allowed a run in three games and 5 1-3 innings for Lowell in the Class A New York-Penn League.