Kevin Youkilis leaves after hit by pitch

BOSTON -- Boston Red Sox third baseman Kevin Youkilis was experiencing headaches after he was hit by a pitch in the bottom of the fourth inning of Monday's 9-7 loss to the Toronto Blue Jays at Fenway Park.

Blue Jays starter Brandon Morrow drilled Youkilis in the back, just below his neck on his right side. He dropped to the ground and remained on his knees for a moment while team trainer Greg Barajas and manager Terry Francona tended to him. Youkilis walked off the field on his own and was replaced by Yamaico Navarro. It was the ninth time this season Youkilis has been hit by a pitch.

"We got him out of there for precautionary reasons," Francona said. "He's got a headache and we'll evaluate him and see how he's doing tomorrow."

It was the 77th time he has been hit in his career, extending the club record.

Joe McDonald covers the Red Sox for ESPNBoston.com. Information from The Associated Press was used in this report.