09/03/2012 10:07 am ET

Serena Williams' Game Face Puts Fear In Her Opponents

There is an eerie moment whenever Serena Williams finishes off another match point; a surreal, awkward transition in full view of the TV cameras. In a nanosecond, the scowling, surly, game face turns joyous, ingenuous. She smiles widely. Williams waves or dances.

It's hard sometimes for the audience to follow along, to relate, because the behavior appears a non sequitur.
How can such a callous, unforgiving athlete instantly become a delighted child? What happened to the face, to the meanness?

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