With the result, Dortmund now sits third in the table, whereas Freiburg suffered its first defeat and slipped to the 11th spot.
Napoli was banned from traveling by local health authorities, after Piotr Zielinski and Eljif Elmas tested positive for COVID-19.
The win also improves the Serbian's season record to a stunning 34-1. The only defeat came in a disqualification earlier this month at the US Open, where he hit a ball in frustration which struck the line judge on the neck.
Leipzig remained offensively minded but for all that Julian Nagelsmann's men squandered a number of chances as neither Dani Olmo nor Nordi Mukiele was able to extend the lead.
Clubs like Bayern had to accept a substantial loss in quality after the departures of Thiago Alcantara (Liverpool), Philippe Coutinho (back to Barcelona), and Ivan Perisic (Inter).
"We stop, we come back, we stop on the changeovers. I think this is a little bit dangerous for the body with these very heavy conditions."
Fekri has already played in Esteghlal for 13 years over two stints. Enditem
Mainz were unable to gain a foothold into the first half and had to wait until the 38th minute to get their first chance on target, as Jean-Philippe Mateta's header came close.
BEIJING, Oct. 6 (Xinhua) -- Chinese talent Sun Yingsha will replace teammate Zhu Yuling to compete at the ITTF Women's World Cup following the latter's withdrawal, according to player updates announced by the world table tennis governing body on Tuesday.
Edmond Tapsoba (R) of Leverkusen vies with Silas Wamangituka of Stuttgart during a German Bundesliga match between VfB Stuttgart and Bayer 04 Leverkusen in Stuttgart, Germany, Oct. 3, 2020. (Photo by Philippe Ruiz/Xinhua)
Shanghai will face Shaanxi on Sunday, while Tianjin's opponents on Monday will be Jiangsu. Enditem