The San Diego Padres and reliever Joaquin Benoit have completed a $15.5 million US, two-year contract that includes a vesting option for 2016.

The team announced the move Saturday. The sides agreed to the deal on Dec. 18, pending a physical.

Benoit, who turns 37 in July, is expected to replace setup man Luke Gregerson, who was traded to Oakland for outfielder Seth Smith.

In his first season as the Detroit Tigers' closer, Benoit had 24 saves in 26 chances this year. But in Game 2 of the AL championship series, he allowed a tying grand slam by Boston's David Ortiz that was a turning point in the series.

To make room for Benoit on the 40-man roster, the Padres designated minor league right-hander Adys Portillo for assignment.