Event: Division One

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Opponent Rating Result
Mike Hadley 1853 ½ - ½
David Thomson 1857 ½ - ½
Mike J Hollier 1838 0 - 1
Tim A Lane 1834 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1646 = (7382 + 400 * (0 - 2)) / 4)

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