Event: Dudley Townshend Trophy

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Opponent Rating Result
David W Randall 1270 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1670 = (1270 + 400 * (1 - 0)) / 1)

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Opponent Rating Result
Paul Bignall 1458 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1058 = (1458 + 400 * (0 - 1)) / 1)