Event: Division 2

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Opponent Rating Result
James Grimston 1600 0 - 1
James Harrison 1515 0 - 1
James Pepperell 1200 0 - 1
Richard Morley 1050 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1141 = (5365 + 400 * (1 - 3)) / 4)

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Opponent Rating Result
Robert Petrovai 1581 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1181 = (1581 + 400 * (0 - 1)) / 1)