Event: Division 3

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Opponent Rating Result
Piotr Dolewka 1527 0 - 1
Les J Jones 1734 0 - 1
Conor Hickey 1500 0 - 1
George Robinson 1421 ½ - ½
Kenzie Orr 1250 1 - 0
Les J Jones 1712 0 - 1
George Robinson 1453 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1285 = (10597 + 400 * (1 - 5)) / 7)

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