Red Sox second baseman Dustin Pedroia was out of the starting lineup Sunday aftef taking a blow to the head on a tag play Saturday night. 

Red Sox manager John Farrell said that Pedroia has exhibited symptoms consistent with a concussion, primarily dizziness, but was improved Sunday morning, according to an ESPN.com report. 

The A's have acquired slugger Adam Dunn in a trade with the White Sox.

The Athletics announced the trade Sunday on their official Twitter account, saying that the White Sox received minor league pitcher Nolan Sanburn in exchange for Dunn and unspecified cash considerations.

Jake Peavy took a no-hitter into the eighth inning and finished with a one-hitter over 7 2/3 innings and the Giants beat the Brewers 3-1 on Saturday night in San Francisco, according to an ESPN.com report.

Red Sox second baseman Dustin Pedroia showed symptoms of a concussion after taking a blow to the left side of the head on a tag play at second base in the second inning of Saturday night's loss to the Rays, according to Boston manager John Farrell.

"He's got some symptoms that are consistent with a concussion,'' Farrell said.

The Orioles added some strength to their bench on Saturday, acquiring Alejandro De Anza from the Red Sox, and Kelly Johnson from the Red Sox in a pair of trades, according to an ESPN.com report.

The Rangers activated starter Derek Holland from the 60-day disabled list on Saturday. Holland has missed all of the season recovering from left knee surgery.

The left-hander will make his season debut Tuesday in Kansas City, according to an ESPN.com report.

Yankees center fielder Jacoby Ellsbury was not in the lineup for Saturday's loss to Toronto after suffering a sprained left ankle in the ninth inning of Friday night's victory over the Blue Jays, according to an ESPN.com report.

Brewers right-hander Matt Garza pitched a simulated game in San Francisco on Friday, in what likely was his final test before returning from the disabled list to the rotation next week, according to an ESPN.com report.

Masahiro Tanaka's attempt to return from a torn elbow ligament without undergoing Tommy John surgery hit a roadblock Friday when the Yankees announced he would return to New York ahead of the team with what was termed as "general soreness'' in his pitching arm.

"I want to be a little bit cautious. I haven't been throwing for a couple of weeks and then I started throwing again and built up the number of pitches that I've been throwing,'' Tanaka said through his interpreter, Shingo Horie. "I think that's the reason why there's a little bit of extra soreness in the arm itself."

The Dodgers have become concerned enough about Yasiel Puig's nearly monthlong batting slump that manager Don Mattingly gave him Friday night's game in San Diego off, the second time the outfielder has been out of the starting lineup in the past week.

Mattingly said he sensed Puig's frustration level has, at times, taken him out of his game, according to an ESPN.com report.