Event: Autumn OTB Division 4

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Opponent Rating Result
Michael Oszczyk 1713 0 - 1
Peter Horwell 1653 0 - 1
Thisumi Jayawarna 1705 1 - 0
David Peatfield 1330 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1600 = (6401 + 400 * (2 - 2)) / 4)

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