Event: Division 2

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Opponent Rating Result
Denzil P Lobo 139 1 - 0
Amy Lovatt 144 ½ - ½
John Hicks 120 ½ - ½
Derek Whitehurst 120 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

231 = (523 + 400 * (1 - 0)) / 4)

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