Quentin, who has been hit by three Greinke pitches in his career, was ejected from the game after charging the mound.
Jedd Gyorko and Alexi Amarista each scored a run in the Padres' loss.
Padres reliever Luke Gregerson gave up his first run of the season and the Dodgers (6-3) won two of three games against San Diego (2-7).
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