Event: 4-Board Division 2

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Opponent Rating Result
Jordan Goodwin 1000 ½ - ½
William Bond 972 1 - 0
Dave Griffiths-Jones 1100 0 - 1
Michael Ingleby 1438 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1228 = (4510 + 400 * (2 - 1)) / 4)

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