What went right
Castellanos had few chances in LA in 2013 and his one home run came in one of poor games the Dodgers played in the second half of the season, a 19-3 loss to the Giants at Dodger Stadium on September 14th.
What went wrong
Noting in particular went wrong for the Castellanos in his brief time with the Dodgers in 2013, in Albuquerque, he didn't have as good a season as he did in 2012, hitting .257/.347/.468 with 19 home runs in 105 games with the Isotopes. He did spend all of 2013 playing either the outfield and a few games at DH.
The Dodgers acquired Jeremy Hazelbaker from Red Sox for Castellanos on October 23. Castellanos had been designated for assignment on October 17th in order to have a roster spot open for Mike Baxter. Castellanos will have one more option available to use in the coming seasons.