Secondary soccer group Fortuna Düsseldorf needs to do without his Polish striker David Knack longer.

As the Rhinelander announced on Monday, the 25-year-old contracted a muscle fiber tear in the thigh in the house game versus SV Tannhauser (2-0) on Sunday and fails until further notice.
Knack had already been changed against Tannhauser in the 18th minute after he had actually formerly hurt himself without a challenger.
The loss weighs greatly for promotion aspirant Düsseldorf, Knack is top scorer in the 6th in the table with 8 goals and six templates.