Barnes was recalled from Triple-A Oklahoma City on Friday.
The 26-year-old has posted excellent numbers in the Pacific Coast League in recent seasons, but he has struggled in the big leagues in a small sample (63 plate appearances). He has an excellent approach, and what seems to be an above average hit tool, although that has yet to manifest itself against big league pitching. Primarily a catcher, Barnes also plays second base, third base and the outfield corners, so he will occupy a minor utility role for the Dodgers down the stretch.