RB Leipzig will be without Captain Yussuf Poulsen for at least part of the last seven matchdays of the season, the club said.
Poulsen suffered a ligament injury on Sunday.
The 25-year-old forward was on target in their 5-0 demolition of Mainz 05 on Sunday and set up two more goals but was diagnosed with a ligament injury a day later.
Leipzig, who host Hertha Berlin on Wednesday, are third in the league on 54 points, seven behind leaders, Bayern Munich, and three off second-placed Borussia Dortmund, with seven games left in the campaign.
The Bundesliga had to break for more than two months due to the COVID-19 pandemic, and resumed 10 days ago.
“Our forward Yussuf Poulsen sustained a ligament injury in his right ankle during the game against Mainz 05.
“He will be sidelined until further notice. That was the result of a scan on Monday,” the club said.