Event: Essex OL Open Championship

Opponent Rating Result
John H Hodgson 2075 1 - 0
David A Sands 2265 0 - 1
Julian Corfield 1956 0 - 1
David Gatheral 1600 1 - 0
Ian D Hunnable 1933 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1966 = (9829 + 400 * (2 - 2)) / 5)

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