On Monday, the Padres will officially add outfielder Luis Durango to the roster and send reliever Luis Perdomo to Triple-A Portland.
Durango will join the team in San Diego on Tuesday for the start of a series against the St. Louis Cardinals. The Padres are off on Monday.
Perdomo was recalled from Portland before Saturday's game against the Mariners, so the team could have a fresh arm for a taxed bullpen.
Perdomo didn't appear in either of the two games he was available to pitch in.
Durango, considered one of the fastest players in the organization, is hitting .305 for the Beavers in his first 40 games this season. Durango already has 17 stolen bases in 2010, though he's been caught 10 times.
Durango played briefly with the Padres at the end of last season, getting six hits over 11 at-bats with two stolen bases.
The Padres currently have two outfielders -- Scott Hairston and Kyle Blanks -- on the 15-day disabled list. Durango will give them depth and someone to pinch-run as well.