Event: Division 2

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Opponent Rating Result
Samuel A Parry 129 0 - 1
Liam McIlveen 120 1 - 0
Joe Hirst 127 ½ - ½
Sandra G Blackburn 120 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

124 = (496 + 400 * (1 - 1)) / 4)

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