Event: Division 2

Opponent Rating Result
Derek Cosens 1705 1 - 0
Ian Goodyer 1578 1 - 0
Ian K Edgson 1658 0 - 1
Jon AN Lawrance 1883 1 - 0
Asanka Amarasinghe 0 1 - 0
Michael K Taylor 0 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1271 = (6824 + 400 * (4 - 2)) / 6)

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