The midfielder was carried off on a stretcher in Borussia Dortmund's 1-0 victory over Schalke in the classic.
Marco Reus was injured in the classic match that Borussia Dortmund defeated Schalke 1-0, and his presence in the 2022 World Cup in Qatar could be compromised.
The midfielder suffered an injury to his right ankle and had to be substituted. Reus was carried off the field at Signal Iduna Park showing concern for his situation.
What happened to Reus comes about two months before the World Cup and brings back memories of the player suffering injuries close to important sporting events.
In 2014, he was ruled out of the World Cup due to an injury to his left ankle, in 2016 a pubalgia kept him out of the Euro, and in 2021 he also did not play in the Euro because his goal was to be in full physical condition.
The classic turns yellow
Borussia Dortmund secured their fifth victory in seven games by winning the prestigious "Revierderby" against Schalke, thanks to a goal from Youssoufa Moukoko in the last ten minutes of the match.
Edin Terzic's players, who came close to a major feat in the Champions League away at Manchester City on Wednesday (a 2-1 defeat after leading 1-0 until the 80th minute), now sit at the top of the league.