Event: 4 Board League A

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Opponent Rating Result
Matthew Smith 1750 0 - 1
Greg Billenness 1987 0 - 1
Paul Kadzionis 1388 1 - 0
Angel A Gonzales 1648 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1493 = (6773 + 400 * (1 - 3)) / 4)

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