Event: Division Three

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Opponent Rating Result
Ray Bettam 1503 ½ - ½
Jet Ajimal 1673 0 - 1
Derek Green 1607 1 - 0
Mike Warden 1568 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1488 = (6351 + 400 * (1 - 2)) / 4)

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