Event: Division 4 - Under 6000

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Opponent Rating Result
Anne-Marie Gregory 1499 1 - 0
Alan H Davies 1484 0 - 1
Lance Howarth 1229 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1271 = (4212 + 400 * (1 - 2)) / 3)

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