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Here is a Here is pic of one of my court ballistecs. I have about 20 pairs of tennis shoes, so I rotate them and dont use this pair that much. Today I played on hard court and my shoe was feeling strange. After carefully inspecting it,I found an air bump on the outsole -not present in the other shoe of the pair-. Have you ever experienced this? Obviously the shoe is a bit old and nike will not provide any kind of warranty, but I am curious if this ever happened to anybody. I am afraid of getting injured if I keep playing on them. Can you see the air bump?