Pedroia experienced symptoms consistent with a concussion after taking a blow to the head in Saturday's loss to the Rays at Tropicana Field. Logan Forsythe unintentionally struck Pedroia in the face while tagging to second base as he tried to swim-move around Pedroia's tag.
"[He's] improved this morning," Farrell said before Sunday's game, for which Pedroia was out of the lineup as expected. "We're holding him out for obvious reasons. We hope this is a short-term thing, but we'll have to go through the normal protocol, and that is continued exams by doctors and making sure that there are no symptoms -- no fatigue, no dizziness, the things that are consistent with a concussion."
After the game, he said Pedroia was about the same as before.
Brock Holt started at second base Sunday.
Pedroia was in the Boston clubhouse before the game. Because rosters expand on Monday, the Red Sox will not need to place him on the seven-day concussion disabled list. But Pedroia will have to pass the same tests in order to play.
"We have to follow the same protocol just to get him back on the field, yes," Farrell said. "Once you submit paperwork that there's been an impact to the head, then there's the follow-up protocol that's got to be followed."
The paperwork the Red Sox filed is required after incidents where an impact to the head is involved, Farrell said.
Farrell did not want to definitively categorize Pedroia's injury as a concussion, although Pedroia was examined by a Rays team doctor Saturday night.
As of now, Pedroia will not need to take additional measures -- such as seeing University of Pittsburgh concussion specialist Dr. Michael Collins, as several Red Sox have done in recent seasons after sustaining concussions.
"I don't know that we're at that point," Farrell said. "When symptoms don't clear up after a prolonged period of time, then you're going to those next steps. There's a lot of gray area in this type of thing when you're dealing with fatigue, you're dealing with equilibrium issues, but those weren't present last night. It was a little bit of dizziness when he first was impacted, but that cleared up as the night went along."