Pal Dardai, head coach of Hertha Berlin reacts during the German Bundesliga football match between FC Schalke 04 and Hertha Berlin in Gelsenkirchen, Germany, on Sept. 2, 2018. (Xinhua/Ulrich Hufnagel)

Domenico Tedesco, head coach of FC Schalke 04, reacts during the German Bundesliga football match between FC Schalke 04 and Hertha Berlin in Gelsenkirchen, Germany, on Sept. 2, 2018. (Xinhua/Ulrich Hufnagel)

Ondrej Duda (2nd R) of Hertha Berlin celebrates after scoring during the German Bundesliga football match between FC Schalke 04 and Hertha Berlin in Gelsenkirchen, Germany, on Sept. 2, 2018. (Xinhua/Ulrich Hufnagel)

Naldo (R) of FC Schalke 04 vies with Salomon Kalou of Hertha Berlin during the German Bundesliga football match between FC Schalke 04 and Hertha Berlin in Gelsenkirchen, Germany, on Sept. 2, 2018. (Xinhua/Ulrich Hufnagel)

Suat Serdar (L) of FC Schalke 04 and Ondrej Duda of Hertha Berlin during the German Bundesliga football match between FC Schalke 04 and Hertha Berlin in Gelsenkirchen, Germany, on Sept. 2, 2018. (Xinhua/Ulrich Hufnagel)