"I was going for the ball and I think he came over the ball and caught me just below the knee. The referee didn't see it and you have to get on with it," said Hamann.
"I really feared that I might have broken my leg, thankfully it is only bad bruising.
"When things like that happen, what you must not do is allow yourself to be distracted, we were playing well and controlling the game and getting the result to win the group was crucial.
"You have to get over these things and move on to the next match and make sure that we continue the run we are in.
"It was the worst tackle I've ever been on the receiving end of, and he didn't even apologise afterwards."