David Ortiz is day-to-day with spasms in his upper middle back.
Rubby De La Rosa gave up seven runs -- six earned -- in four-plus innings Thursday in a loss to the Blue Jays.
David Ortiz left Thursday's game against the Blue Jays with an apparent back injury.
Red Sox prospect second baseman Wendell Rijo went 2-for-5 with a double and a triple for Low-A Greenville on Wednesday, raising his season line to .267/.351/.434.
Red Sox principal owner John Henry told the Boston Herald that extension talks with impending free agent Jon Lester have been tabled until after the 2014 season.
Dustin Pedroia is not in the Red Sox starting lineup on Thursday afternoon against the Blue Jays.
Clay Buchholz surrendered five runs -- four earned -- in six innings Wednesday in a loss to the Blue Jays.
David Ortiz hit a three-run homer Wednesday off R.A. Dickey in the loss to the Jays.
David Ross has been dealing with a right foot ailment for most of the season that the Red Sox believe is plantar fasciitis.
Jake Peavy was hit hard by the Blue Jays on Tuesday, allowing five runs over six innings in a loss, which brought his record to a disappointing 1-9.
David Ortiz hit another home run, finishing 2-for-5 overall in a loss to the Blue Jays on Tuesday.
Shane Victorino singled three times in four at-bats, scoring once, but the Red Sox suffered a defeat to the Blue Jays on Tuesday.
Shane Victorino is back in Tuesday's lineup against the Blue Jays.
Nick Cafardo of the Boston Globe reports that Jake Peavy "is still on the Cardinals' back burner."
David Ortiz slammed a pair of two-run homers off Brad Mills in the Red Sox's 14-1 drubbing of the Blue Jays on Monday.