Event: Mini League

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Opponent Rating Result
Brian Ward 1450 1 - 0
Simon Bartle 1205 1 - 0
Nigel Stansbie 1450 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1502 = (4105 + 400 * (2 - 1)) / 3)

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