While they may have entered the weekend top of the Bundesliga table, Union failed to cope in the face of Stuttgart's fast start, with the hosts forcing goalkeeper Frederik Ronnow into a number of saves.
Dan-Axel Zagadou saw a backpost header scrambled off the line from the Union shot-stopper, before Hiroki Ito’s swerving left-footed free-kick from range was also thwarted by an alert Ronnow.
A total of 12 points had separated relegation candidates Stuttgart from leaders Union heading into the clash, but it was the home side who continued to look the most threatening early in the second half.
Wataru Endo found himself with time and space inside the visitors’ penalty area, but as had been the case during the first half, Rønnow was once again equal to the effort.
Having held out for 75 minutes, Jaeckel’s opener came somewhat against the run of play, with the Union defender heading home from Niko Giesselmann’s whipped corner ball.
A frustrating night for Stuttgart turned into a miserable one moments later, when a second yellow card for the influential Serhou Guirassy saw the home side reduced to ten men.
It’s no wins in the Bundesliga since May for Stuttgart, with the Pellegrino Matarazzo era on the brink of collapse.
The fortunes of Union could hardly be any different, as the club from the capital continue to defy the odds and set the pace after nine rounds of Bundesliga action.
Flashscore Man of the Match: Frederik Ronnow (Union Berlin)
