Hoffenheim striker Demba Ba will be ruled out for three weeks with a thigh injury, the Bundesliga club said. The Senegalese forward picked up the injury during the 2-0 league defeat to Bayern Munich at the weekend. Ba joins a long injury list for Ralf Rangnick's side, who already miss Carlos Eduardo, Tobias Weis, Mathias Jaissle, and Prince Tagoe. In addition to their injury problems, Hoffenheim are without Nigerian ace Chinedu Obasi and Ghana's Isaac Vorsah, who are both in the African Cup of Nations.