Sox taking cautious approach with Ross

DETROIT -- The Red Sox have learned that David Ross is likely to miss at least a couple of more weeks of action after suffering his second concussion of the season.

The backup catcher was placed on the seven-day disabled list June 18, but after a conferral with noted concussion specialist Michael Collins in Pittsburgh, it is clear Ross needs more than seven days.

Ross appeared to suffer his latest concussion when he was hit by a foul tip in Baltimore on June 14.

"The results were evident in those tests. The recommendation by Dr. Collins was to basically shut down for a period of time here," said manager John Farrell. "So he's going to be away for the team. He'll return home to Tallahassee, [Fla.], until his next scheduled appointment with Dr. Collins, which is the first week of July.

"So the thing we have to really be cautious with here, it's the second time he suffered one. That will take some additional time to get over his symptoms. There's no timetable on his return. The only timetable we have is on that next appointment and where he'll be until then."

Ryan Lavarnway, who started Thursday, will be the backup catcher as long as Ross is out.