Event: Division Three

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Opponent Rating Result
Majid Mashayekh 1874 0 - 1
Alastair G Johnstone 1580 0 - 1
David Heaton 1558 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1537 = (5012 + 400 * (1 - 2)) / 3)

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