Career
Quackenbush was named a second team All-American in 2011. The Padres selected him in the eighth round of the 2011 MLB Draft. They promoted him to Class American Automobile Association in 2013 and invited him to spring training in 2014.
Quackenbush was called up to the majors for the first time on April 25, 2014.
He made his debut that day. On August 19, he recorded his first major league save.