Event: Division 3

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Opponent Rating Result
James M Robinson 1873 1 - 0
Leif Hafstad 1951 0 - 1
Brendan O'Gorman 1735 1 - 0
Laurie Mackellar 1700 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2015 = (7259 + 400 * (3 - 1)) / 4)

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