Event: Division Three

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Opponent Rating Result
David W Fone 1597 0 - 1
Paul B Sharratt 1729 0 - 1
Barry Hearn 1341 1 - 0
Barry R Smith 1574 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1360 = (6241 + 400 * (1 - 3)) / 4)

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