DL possible for Buch; tests for Napoli

BALTIMORE -- The off-again, on-again status of Clay Buchholz's next start is off again, and Red Sox manager John Farrell acknowledged they may place the right-hander on the disabled list with ongoing discomfort in his trapezius muscle in his neck area.

With an off-day Monday, Felix Doubront will pitch on regular rest in Tuesday's doubleheader versus the Rays, with the other starter still to be determined. Ryan Dempster will pitch Wednesday.

The earliest Buchholz will pitch is now Saturday in Detroit, Farrell said.

Meanwhile, the Sox sent first baseman Mike Napoli back to Boston to undergo testing to determine the cause of dizziness, nausea and light-headedness he has been experiencing since Thursday, when he came out of a game against the Tampa Bay Rays in the third inning. The Sox have consulted a concussion specialist who has all but ruled out that as a cause, Farrell said, but the club remains puzzled by his condition.

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