Event: Hillingdon Div 1

Opponent Rating Result
Greg J Breed 1914 1 - 0
Bodhana Sivanandan 2180 0 - 1
Andrew Harley 2153 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1949 = (6247 + 400 * (1 - 2)) / 3)

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