Event: Division 2

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Opponent Rating Result
Vivian J Cole 1975 0 - 1
Lawrence Rhodes 1633 1 - 0
Paul Edwards 1788 0 - 1
Ian K Edgson 1695 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1573 = (7091 + 400 * (1 - 3)) / 4)

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Opponent Rating Result
Peter Rankin 1666 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1266 = (1666 + 400 * (0 - 1)) / 1)