Quackenbush, 24, had 46 strikeouts in 31 innings with 13 saves. He allowed 16 hits and 10 walks and he yielded just one earned run in his time in the Texas League.
Quackenbush, who was picked in the eighth round of the 2011 Draft, has a 0.69 ERA in 116 games as a professional with 187 strikeouts in 130 2/3 innings.
Quackenbush throws a fastball in the low 90s with a lot of deception. He has a career rate of 12.9 strikeouts per nine innings and 5.7 hits per nine innings.
Corey Brock is a reporter for MLB.com. Keep track of @FollowThePadres on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.