Event: Division 2

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Opponent Rating Result
Benjamin Lappin 1961 0 - 1
Graeme Hood 1803 0 - 1
John H Sleggs 1525 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1630 = (5289 + 400 * (1 - 2)) / 3)

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