Event: Derby & District Division 3

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Opponent Rating Result
Ian R Morrell 1171 1 - 0
Joe Parker 1475 0 - 1
Mohinderpal Samra 1345 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1197 = (3991 + 400 * (1 - 2)) / 3)

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