Bayern Munich striker Mario Gomez has pulled out of Germany's 2012 European Championship qualifier against Austria and a friendly match against Poland due to groin problems.
The German football federation (DFB) said Sunday that Stuttgart striker Cacau has been called up to replace Gomez.
Gomez aggravated a muscle injury in his side's 3-0 win over Kaiserslautern on Saturday, when he scored two penalties in a hat trick.
Germany can qualify for next year's tournament in Poland and Ukraine with a win against Austria in Gelsenkirchen on Sept. 2. The friendly match takes place in Gdansk, Poland four days later.
Gomez has scored 19 goals in 47 appearances for Germany, while the 30-year-old Cacau has four goals from 17 matches.