Germany midfielder Michael Ballack is facing a six-week break with a hairline fracture.
Tests Sunday showed the 33-year-old Bayern Leverkusen player has injured the tibia in his left leg. Ballack came off after playing for 30 minutes in the 2-2 draw at Hannover on Saturday.
The news deals Ballack another setback as he tries to return to the national side after missing the World Cup with an ankle injury.
He officially remains Germany captain but coach Joachim Loew has said he must regain his pre-injury form to earn his place.
Germany plays European Championship qualifiers against Turkey and Kazahkstan in early October.