Hamburg SV skipper Johan Djourou has been ruled out for an unspecified period after sustaining a thigh injury in Saturday's 3-2 Bundesliga victory over VfB Stuttgart.
"Bitter blow for Hamburg as the captain has suffered a muscle fibre tear," the club said.
The 28-year-old Switzerland defender scored an 89th-minute goal to help his team claim their first victory of the season against Stuttgart.
Hamburg, who needed a relegation playoff for the second consecutive year last season to stay up, take on Cologne on Saturday.
(For more sports news and updates, follow Ahram Online Sports on Twitter at @AO_Sports and on Facebook at AhramOnlineSports.)