Event: Division Four

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Opponent Rating Result
John Grant 134 1 - 0
David J Friend 114 1 - 0
Ionut Florin Valea 116 0 - 1
Penny A Wood 103 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

217 = (467 + 400 * (2 - 1)) / 4)

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