Event: Division Four

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Opponent Rating Result
Phil Wells 1712 ½ - ½
Awais Zabber 1522 1 - 0
David M Cotterell 1546 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1593 = (4780 + 400 * (1 - 1)) / 3)

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