With Chris Davis being out for some time with an injury the Orioles do not have a true backup first baseman. Pearce can play first base and the outfield, though I do not think he plays either that well. Bringing back Pearce is clearly a depth move.
Here is the Orioles press release.
Orioles sign INF/OF Steve Pearce to a Major League contract
The Orioles today announced that they have signed INF/OF STEVE PEARCE to a major league contract.
Pearce, 31, went 1-for-7 in three games with the Orioles earlier this season. He was designated for assignment on April 22 and released on April 27.