The Padres designated Jacob for assignment Wednesday.
After turning in a 5.58 ERA and 1.54 WHIP across 61.1 innings at Triple-A El Paso, Jacob will lose his place on San Diego's 40-man roster to clear space for Jason Adam (shoulder), who returned from the 60-day IL on Wednesday. Jacob's career numbers in the majors are respectable (4.18 ERA, 1.23 WHIP), though his poor performance in the minors may deter other teams from claiming him off waivers.