Event: David Hodgson Trophy

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Opponent Rating Result
Laurence Ball 2058 1 - 0
Laurence Ball 2227 0 - 1
Laurence Ball 2227 0 - 1
Laurence Ball 2058 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1943 = (8570 + 400 * (1 - 3)) / 4)

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