Event: Division Five

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Opponent Rating Result
Stephen Smithson 1354 1 - 0
Bob Hackett 1414 0 - 1
Des J Green 1106 0 - 1
Richard F Collett 1391 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1316 = (5265 + 400 * (2 - 2)) / 4)

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