Leverkusen confirmed the injury on its website Saturday, after the former Germany captain underwent a checkup at a Freiburg clinic on Friday night after the match. The Bundesliga side says a decision on whether Ballack plays at Valencia in the Champions League on Tuesday won't be made until shortly before the game. The 35-year-old Ballack scored in the second minute of Leverkusen's win, his first Bundesliga goal for more than five years.