Event: Division 1

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Opponent Rating Result
David Short 1682 1 - 0
Trevor Robbins 1974 1 - 0
Trevor Robbins 1894 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1983 = (5550 + 400 * (2 - 1)) / 3)

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Opponent Rating Result
Ben Tarlow 1835 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1835 = (1835 + 400 * (0 - 0)) / 1)