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. 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==