Event: Division 2

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Opponent Rating Result
Samuel Gaffney 1820 0 - 1
John Price 1541 ½ - ½
Mark Heffer 1699 0 - 1
David P Green 1626 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1372 = (6686 + 400 * (0 - 3)) / 4)

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