This one had to hurt.
Mario Balotelli has one of the strongest legs in football, and he showcased that in Tuesday night's Champions League match between AC Milan and Atletico Madrid.
Unfortunately for Atletico star Diego Costa, that leg slammed a free-kick directly into his...lower body.
However, it should provide Costa some consolation that his Atletico side made quick work of their opponents and have advanced to the next round.
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