Event: Division One

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Opponent Rating Result
Golam S Ali 1953 0 - 1
Geoffrey C Rosser 1630 ½ - ½
Tim A Lane 1885 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1556 = (5468 + 400 * (0 - 2)) / 3)

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