The Dodgers received infielder/outfielder Matt Long as the player to be named later in a Dec. 9 trade that sent catcher Drew Butera to the Angels.
The Dodgers promptly flipped Long, along with left-hander Jarret Martin, to the Brewers in exchange for Zarraga.
Zarraga, 25, is a career .283 hitter in the minor leagues. He has hit 13 home runs and driven in 167 runs over seven seasons.
Zarraga was the Brewers’ 44th-round pick in the 2007 draft.