The former Germany international injured his calf muscle in training on Sunday
and will now miss Tuesday's match at the BayArena, although the length of his
absence has yet to be determined.
The 35-year-old Ballack has made 14 league appearances for Bayer this season,
but was left on bench for the third successive match in Saturday's 1-0 defeat
to Borussia Dortmund.
Leverkusen is also going to be without Sidney Sam and Eren Derdiyok because of