On June 23, 1915, Bruno Haas of the Philadelphia Athletics pitched a complete game against the Yankees at Shibe Park. Haas lost the contest 15-7, however, giving up 16 walks over those 9 innings. It is a post-1900 record for a 9-inning game that stands to this day.
Records for most walks in a game are shown below, courtesy of Baseball Almanac.
