Event: Derby & District Division 3

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Opponent Rating Result
Keith Walsh 1636 0 - 1
Michael D Boreham 1523 0 - 1
J Martin Gibson 1106 0 - 1
Joe Parker 1471 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1034 = (5736 + 400 * (0 - 4)) / 4)

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