Jackson was recalled from Triple-A Oklahoma City prior to Friday's game against Colorado.
Jackson was sent back to Oklahoma City after striking out five while pitching four scoreless innings in his major-league debut Aug. 16. He'll now return to the big leagues and figures to be in line to serve as the bulk pitcher Friday, though the Dodgers have not yet announced if they'll use an opener ahead of him. Darien Nunez was optioned to make room on the 26-man roster.