Event: Division A

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Opponent Rating Result
John Cawdery 2089 1 - 0
Peter Jaszkiwskyj 2002 0 - 1
John Cawdery 2089 ½ - ½
Robin J Oakley 1769 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2087 = (7949 + 400 * (2 - 1)) / 4)

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