Event: Autumn OTB Division 4

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Opponent Rating Result
Terry Cowling 1653 0 - 1
Thisumi Jayawarna 1705 0 - 1
Damien McElvenny 1885 ½ - ½
Richard Nurse 1743 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1547 = (6986 + 400 * (0 - 2)) / 4)

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