Event: NSDCA Division 4

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Opponent Rating Result
Gerald Parton 1158 1 - 0
Jay Swann 1272 0 - 1
Gerald Parton 1158 0 - 1
Ian Mullin 1236 0 - 1
Mark Hughes 1250 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

975 = (6074 + 400 * (1 - 4)) / 5)

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