One week after its young attacking stars impressed in the Bundesliga, Borussia Dortmund slumped to a 2-0 defeat at Augsburg.

Gio Reyna, Jadon Sancho, Erling Haaland and Jude Bellingham grabbed the headlines in beating Borussia Mönchengladbach 3-0 in the opening round, but were frustrated by a stubborn defense marshaled by Augsburg goalkeeper Rafal Gikiewicz on Saturday.

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Andre Hahn from Augsburg, left, and Giovanni Reyna from Dortmund challenge for the ball during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

One week after its young attacking stars impressed in the Bundesliga, Borussia Dortmund slumped to a 2-0 defeat at Augsburg.

Goalkeeper Rafal Gikiewicz of Augsburg, right, defends a ball from Jude Bellingham of Dortmund during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Former Schalke player Daniel Caligiuri doubled the lead in the 54th, holding off Thomas Meunier’s challenge before shooting past Dortmund ’keeper Roman Bürki.

Jadon Sancho from Dortmund, left, and Daniel Caligiuri from Augsburg, right, challenge for the ball during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020. (Matthias Balkdpa via AP)

Gikiewicz’s former side, Union Berlin, salvaged a 1-1 draw at Gladbach thanks to Nico Schlotterbeck’s late equalizer. Marcus Thuram scored with a deflected header for Gladbach in the 56th.

Fans sit on the tribune prior the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020. (Matthias Balkdpa via AP)

Schalke was to host Werder Bremen later, hoping to end a 17-game run without a win. Fans were allowed to attend, but those plans were canceled earlier Saturday due to a high number of new coronavirus infections in the area.

Dortmund head coach Lucien Favre is pictured prior the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Dortmund head coach Lucien Favre is pictured prior the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Monchengladbach's Marcus Thuram, third right, scores his side's first goal of the game during the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Monchengladbach's Marcus Thuram, third right, scores his side's first goal of the game during the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Monchengladbach's Nico Elvedi, right, and Union's Taiwo Awoniyi battle for the ball during the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Monchengladbach's Nico Elvedi, right, and Union's Taiwo Awoniyi battle for the ball during the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Two lonely spectators sit on there seats prior the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Two lonely spectators sit on there seats prior the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Dortmund dominated the first half with eight efforts on target, but Felix Uduokhai scored with Augsburg’s only chance of the half, heading home a free kick from close range in the 40th minute.

Andre Hahn from Augsburg, left, and Giovanni Reyna from Dortmund challenge for the ball during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Andre Hahn from Augsburg, left, and Giovanni Reyna from Dortmund challenge for the ball during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Former Schalke player Daniel Caligiuri doubled the lead in the 54th, holding off Thomas Meunier’s challenge before shooting past Dortmund ’keeper Roman Bürki.

Dortmund coach Lucien Favre sent on Marco Reus and Julian Brandt with half an hour to play, to little effect. The 18-year-old Brazilian Reinier followed for his Bundesliga debut in the 69th, but he couldn’t lift the side either.

Gikiewicz denied Mats Hummels, then Haaland late on, as Augsburg claimed its second win in two games.

Goalkeeper Rafal Gikiewicz of Augsburg, right, defends a ball from Jude Bellingham of Dortmund during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Goalkeeper Rafal Gikiewicz of Augsburg, right, defends a ball from Jude Bellingham of Dortmund during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Gikiewicz’s former side, Union Berlin, salvaged a 1-1 draw at Gladbach thanks to Nico Schlotterbeck’s late equalizer. Marcus Thuram scored with a deflected header for Gladbach in the 56th.

Bayer Leverkusen and Leipzig drew 1-1, and promoted sides Arminia Bielefeld and Stuttgart enjoyed wins over Cologne and Mainz, respectively.

Joan Simun Edmundsson scored for Bielefeld to win 1-0, and Stuttgart fought back to win in Mainz 4-1.

Jadon Sancho from Dortmund, left, and Daniel Caligiuri from Augsburg, right, challenge for the ball during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020. (Matthias Balkdpa via AP)

Jadon Sancho from Dortmund, left, and Daniel Caligiuri from Augsburg, right, challenge for the ball during the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020. (Matthias Balkdpa via AP)

Schalke was to host Werder Bremen later, hoping to end a 17-game run without a win. Fans were allowed to attend, but those plans were canceled earlier Saturday due to a high number of new coronavirus infections in the area.

Limited numbers of fans have been allowed at most games since last weekend for the first time since restrictions began in March.

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Fans sit on the tribune prior the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020. (Matthias Balkdpa via AP)

Fans sit on the tribune prior the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020. (Matthias Balkdpa via AP)

Dortmund head coach Lucien Favre is pictured prior the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Dortmund head coach Lucien Favre is pictured prior the German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Sept. 26, 2020.(Matthias Balkdpa via AP)

Monchengladbach's Marcus Thuram, third right, scores his side's first goal of the game during the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Monchengladbach's Marcus Thuram, third right, scores his side's first goal of the game during the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Monchengladbach's Nico Elvedi, right, and Union's Taiwo Awoniyi battle for the ball during the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Monchengladbach's Nico Elvedi, right, and Union's Taiwo Awoniyi battle for the ball during the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Two lonely spectators sit on there seats prior the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)

Two lonely spectators sit on there seats prior the German Bundesliga soccer match between Borussia Moenchengladbach and Union Berlin in Moenchengladbach, Germany, Saturday, Sept. 26, 2020. (Bernd Thissendpa via AP)