Dressendorfer was then selected by the Oakland Athletics in the first round (36th pick overall) of the 1990 MLB Draft. The Athletics possessed four first-round draft picks - including supplementals - due to compensation for the loss of free agents. The team took the unique choice to draft four different starting pitchers, Dressendorfer the last of a cohort that included Todd Van Poppel, Donald Peters, and Dave Zancanaro. Media dubbed the group the 'Four Aces'. However, Dressendorfer joined Van Poppel as the only two of the four to reach the major leagues.[3] He started out with the Southern Oregon Timberjacks before making his Major League Baseball debut with the Athletics on April 13, 1991, pitching to a 4–2 victory over the Seattle Mariners, and appearing in his final MLB game on May 21, 1991. Over the next 6 years, he bounced around the minor leagues, playing at times for Tacoma, Modesto, Arizona, Huntsville, Edmonton, and Albuquerque. After the 1997 season he retired.
Personal
Dressendorfer was the Director of Baseball Operations & Outreach for the Round Rock Express, the AAA affiliate of the Houston Astros. He now is a Business Development Project Manager for the After Point of Sales Services organization within Dell Inc.