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I do not want to be misunderstood but just to make clear how serious can be ankle injury
http://sportsillustrated.cnn.com/2011/baseball/mlb/05/11/angels-morales....
Ankles are very delicate and that kind of injuries can be troubling for sportsmen (Marco Van Basten had to quit playing soccer in his prime, just to make a well known example, but we could remember Robin Ventura as well)