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?