Farmer was recalled from Triple-A Oklahoma City on Saturday.
While Farmer put together a fine season in the minors, slashing .317/.375/.476 with 10 homers between Double-A and Triple-A, he will likely only see sporadic opportunities. A catcher by trade, Farmer also played a decent amount of third base this year, but it's hard to imagine he will play there much (if at all) with the big club.