Antonini was traded to the Los Angeles Dodgers on December 27, 2010, for Chin-lung Hu. With the Dodgers organization in 2011, he made 27 starts for the AA Chattanooga Lookouts and was 10–9 with a 4.01 ERA. He played in the mid-season Southern League All-Star Game and was added to the Dodgers' 40-man roster after the season to protect him from the Rule 5 Draft.
