Kerr will be promoted from Triple-A El Paso on Wednesday, Kevin Acee of The San Diego Union-Tribune reports.
With Reiss Knehr (elbow) landing on the injured list after filling in for Yu Darvish (illness) on Tuesday, Kerr will be called upon to provide much-needed depth to the Padres' bullpen. Kerr holds a 6.00 ERA and 1.17 WHIP through six innings in the majors this season.