Event: Division One

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Opponent Rating Result
Okwose Marc Obi 1996 0 - 1
Jonathan P Pincher 1727 1 - 0
Mark A Drugan 1742 1 - 0
Anthony Sadler 1842 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1927 = (7307 + 400 * (2 - 1)) / 4)

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