Germany winger Chris Fuehrich's goal had Stuttgart on course for third spot but the South Korean's late equaliser leaves the German Cup holders in fourth, a point ahead of fifth-placed RB Leipzig.
Unfancied Union are now unbeaten since early December, a run of five matches, and sit eighth, five points behind the European placings.
After a first-half with few chances for either side, Fuehrich put the hosts in front just before the hour mark.
Stuttgart defender Ramon Hendriks charged forward before finding Fuehrich... Читать дальше...