Event: Div4

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Opponent Rating Result
John E Fryer 111 ½ - ½
R Arthur Hall 107 ½ - ½
Nigel D Marshall 111 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

110 = (329 + 400 * (0 - 0)) / 3)

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Opponent Rating Result
Craig Harrison 113 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

513 = (113 + 400 * (1 - 0)) / 1)