Event: EDCA - National Premier

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Opponent Rating Result
Gary Hunter 1656 1 - 0
David T Guy 1807 ½ - ½
Lewis Martin 2202 0 - 1
Ilan Dwek 1722 ½ - ½
Stephen Gibson 1468 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1851 = (8855 + 400 * (2 - 1)) / 5)

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