Event: Division Two

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Opponent Rating Result
Peter W Leary 1744 0 - 1
Tim A Lane 1799 0 - 1
Roy A Lawrence 1811 0 - 1
Mike J Groombridge 1640 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1549 = (6994 + 400 * (1 - 3)) / 4)

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