Event: Division Two

Opponent Rating Result
Kenneth G Coates 1910 0 - 1
Nigel D Smith 1873 ½ - ½
David V Deane 1773 0 - 1
Adam Smith 1636 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1598 = (7192 + 400 * (0 - 2)) / 4)

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