To make room on the roster, Los Angeles transferred reliever Jose Dominguez to the 60-day disabled list.
Castellanos was originally acquired by the team in a deal that sent Rafael Furcal to St. Louis. In 105 games with Albuquerque this season, the 27-year old batted .257 with 19 homers and 61 runs batted in. He also stole 19 bases in 24 attempts.
A Pacific Coast League All-Star, the 26-year old Buss batted .303 with 17 homers and 100 runs batted in during 131 games in Triple-A. He led the PCL in RBI and ranked among the top ten in hits, runs, triples, total bases, slugging percentage and stolen bases.
With the transactions, the Dodgers added a bat from each side of the plate; Castellanos bats from the right side, Buss from the left.
Reliever Dominguez started the year strong splitting time between Double-A Chattanooga and Triple-A Albuquerque.
In his first 22 games in the minors this season, Dominguez had a 2-0 record with five saves and an impressive 1.79 earned run average. He struck out 40 and walked 13 while limiting opposing hitters to a .108 batting average.
He was called up the Los Angeles on June 29th, and posted a 2.16 ERA in nine appearances. Dominguez has been on the DL since July 23rd with a left quad strain.
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