August 19, 2012; San Diego, CA, USA; San Diego Padres relief pitcher Cory Burns (61) reacts after finishing the game for a 7-1 win against the San Francisco Giants at Petco Park. Mandatory Credit: Christopher Hanewinckel-USA TODAY Sports

Burns was originally traded for a player to be named later, who eventually became Boscan.

Boscan was left out of the Rangers’ 40-man roster, and was left unprotected for the Rule 5 Draft, but since he wasn’t drafted, the Rangers agreed to send him to San Diego.

Since he wasn’t selected in the draft, Rule 5 rules will not apply to Boscan or the Padres.

Boscan,22, went 7-5 with a 3.75 ERAand 89 strikeouts against 28 walks over 34 games, nine starts for Double-A Frisco in the Rangers organization last season.

The Venezuelan has a career 38-44 record with a 4.00 ERA over parts of six Minor League seasons in the Rangers organization.